Fit for SlackFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.comApache License 2.0A permissive license whose main conditions require preservation of copyright and license notices. Contributors provide an express grant of patent rights. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesNoTrademark useLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for SlackFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseApache License 2.0A permissive license whose main conditions require preservation of copyright and license notices. Contributors provide an express grant of patent rights. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesNoTrademark useLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for SlackFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseMIT LicenseA short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for SlackFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierBTier BPaid extras for admin, identity or audit
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for Microsoft TeamsFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.comApache License 2.0A permissive license whose main conditions require preservation of copyright and license notices. Contributors provide an express grant of patent rights. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesNoTrademark useLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for Microsoft TeamsFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseApache License 2.0A permissive license whose main conditions require preservation of copyright and license notices. Contributors provide an express grant of patent rights. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesNoTrademark useLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for Microsoft TeamsFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseMIT LicenseA short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for Microsoft TeamsFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierBTier BPaid extras for admin, identity or audit
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for NotionFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseBUSL 1.1 (custom license)Not a standard license, so GitHub's license summaries don't cover it. Read the project's license text before relying on it.
Paid-feature tierSTier SSource-available license, not OSI
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for NotionFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseMIT LicenseA short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeNoLiabilityWarrantySummary from GitHub's choosealicense.comMozilla Public License 2.0Permissions of this weak copyleft license are conditioned on making available source code of licensed files and modifications of those files under the same license (or in certain cases, one of the GNU licenses). Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. However, a larger work using the licensed work may be distributed under different terms and without source code for files added in the larger work.MayCommercial useModificationDistributionPatent usePrivate useMustDisclose sourceLicense and copyright noticeSame license (file)NoLiabilityTrademark useWarrantySummary from GitHub's choosealicense.comAFFiNE EE (custom license)Not a standard license, so GitHub's license summaries don't cover it. Read the project's license text before relying on it.
Paid-feature tierUTier ULicense or parity scope unresolved
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for NotionFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseMIT LicenseA short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for NotionFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for NotionFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierUTier ULicense or parity scope unresolved
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for FirebaseFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseBSD 3-Clause "New" or "Revised" LicenseA permissive license similar to the <a href="/licenses/bsd-2-clause/">BSD 2-Clause License</a>, but with a 3rd clause that prohibits others from using the name of the copyright holder or its contributors to promote derived products without written consent.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierBTier BPaid extras for admin, identity or audit
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for FirebaseFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseApache License 2.0A permissive license whose main conditions require preservation of copyright and license notices. Contributors provide an express grant of patent rights. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesNoTrademark useLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for FirebaseFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseMIT LicenseA short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for 1PasswordFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.comBitwarden 1.0 (custom license)Not a standard license, so GitHub's license summaries don't cover it. Read the project's license text before relying on it.
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for 1PasswordFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for 1PasswordFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for Figma DesignFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseMozilla Public License 2.0Permissions of this weak copyleft license are conditioned on making available source code of licensed files and modifications of those files under the same license (or in certain cases, one of the GNU licenses). Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. However, a larger work using the licensed work may be distributed under different terms and without source code for files added in the larger work.MayCommercial useModificationDistributionPatent usePrivate useMustDisclose sourceLicense and copyright noticeSame license (file)NoLiabilityTrademark useWarrantySummary from GitHub's choosealicense.com
Paid-feature tierBTier BPaid extras for admin, identity or audit
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for PostmanFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseMIT LicenseA short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierBTier BPaid extras for admin, identity or audit
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for PostmanFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseMIT LicenseA short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: noNot offered as software you run yourself.
Fit for DatadogFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for ZoomFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseApache License 2.0A permissive license whose main conditions require preservation of copyright and license notices. Contributors provide an express grant of patent rights. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesNoTrademark useLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for ZoomFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseGNU Lesser General Public License v3.0Permissions of this copyleft license are conditioned on making available complete source code of licensed works and modifications under the same license or the GNU GPLv3. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. However, a larger work using the licensed work through interfaces provided by the licensed work may be distributed under different terms and without source code for the larger work.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeDisclose sourceState changesSame license (library)NoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierUTier ULicense or parity scope unresolved
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for AsanaFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU General Public License v3.0Permissions of this strong copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for AsanaFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for AsanaFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseEclipse Public License 2.0This commercially-friendly copyleft license provides the ability to commercially license binaries; a modern royalty-free patent license grant; and the ability for linked works to use other licenses, including commercial ones.MayCommercial useDistributionModificationPatent usePrivate useMustDisclose sourceLicense and copyright noticeSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for AsanaFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseMozilla Public License 2.0Permissions of this weak copyleft license are conditioned on making available source code of licensed files and modifications of those files under the same license (or in certain cases, one of the GNU licenses). Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. However, a larger work using the licensed work may be distributed under different terms and without source code for files added in the larger work.MayCommercial useModificationDistributionPatent usePrivate useMustDisclose sourceLicense and copyright noticeSame license (file)NoLiabilityTrademark useWarrantySummary from GitHub's choosealicense.com
Paid-feature tierUTier ULicense or parity scope unresolved
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for TrelloFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseMIT LicenseA short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for TrelloFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicensePLANKA Community 1.1 (custom license)Not a standard license, so GitHub's license summaries don't cover it. Read the project's license text before relying on it.
Paid-feature tierSTier SSource-available license, not OSI
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for TrelloFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseMIT LicenseA short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for DropboxFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierBTier BPaid extras for admin, identity or audit
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for DropboxFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseApache License 2.0A permissive license whose main conditions require preservation of copyright and license notices. Contributors provide an express grant of patent rights. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesNoTrademark useLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierBTier BPaid extras for admin, identity or audit
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for DropboxFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.comOpenSSL linking exception (custom license)Not a standard license, so GitHub's license summaries don't cover it. Read the project's license text before relying on it.
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for HubSpotFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Lesser General Public License v3.0Permissions of this copyleft license are conditioned on making available complete source code of licensed works and modifications under the same license or the GNU GPLv3. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. However, a larger work using the licensed work through interfaces provided by the licensed work may be distributed under different terms and without source code for the larger work.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeDisclose sourceState changesSame license (library)NoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for HubSpotFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.comTwenty Application Exception (custom license)Not a standard license, so GitHub's license summaries don't cover it. Read the project's license text before relying on it.
Paid-feature tierBTier BPaid extras for admin, identity or audit
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for HubSpotFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for HubSpotFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU Affero General Public License v3.0Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available.MayCommercial useModificationDistributionPatent usePrivate useMustLicense and copyright noticeState changesDisclose sourceNetwork use is distributionSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for ShopifyFit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity.
LicenseMIT LicenseA short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierBTier BPaid extras for admin, identity or audit
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for ShopifyFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseOpen Software License 3.0Permissions of this copyleft license are conditioned on distributing source code of licensed works and modifications under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. Using the work or modifications to provide services to external users is treated as distribution and also requires making source code available. Works that merely link to a licensed work are considered collective works and are not subject to the license's reciprocity requirements.MayCommercial useDistributionModificationPatent usePrivate useMustLicense and copyright noticeDisclose sourceState changesNetwork use is distributionSame licenseNoTrademark useLiabilityWarrantySummary from GitHub's choosealicense.comAcademic Free License v3.0The Academic Free License is a variant of the Open Software License that does not require that the source code of derivative works be disclosed. It contains explicit copyright and patent grants and reserves trademark rights in the author.MayCommercial useModificationDistributionPrivate usePatent useMustLicense and copyright noticeState changesNoTrademark useLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierATier ANo paid feature gates in the self-run edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Fit for ShopifyFit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity.
LicenseGNU General Public License v2.0The GNU GPL is the most widely used free software license and has a strong copyleft requirement. When distributing derived works, the source code of the work must be made available under the same license. There are multiple variants of the GNU GPL, each with different requirements.MayCommercial useModificationDistributionPrivate useMustLicense and copyright noticeState changesDisclose sourceSame licenseNoLiabilityWarrantySummary from GitHub's choosealicense.com
Paid-feature tierCTier CDaily-workflow features need a paid edition
Self-hostSelf-hostable: yesYou can run it on your own server.
Paid-feature limits1 noted
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GNU Affero General Public License v3.0 Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the complete source code of the modified version must be made available. May Commercial useModificationDistributionPatent usePrivate use Must License and copyright noticeState changesDisclose sourceNetwork use is distributionSame license No LiabilityWarranty Summary from GitHub's choosealicense.com 
Apache License 2.0 A permissive license whose main conditions require preservation of copyright and license notices. Contributors provide an express grant of patent rights. Licensed works, modifications, and larger works may be distributed under different terms and without source code. May Commercial useModificationDistributionPatent usePrivate use Must License and copyright noticeState changes No Trademark useLiabilityWarranty Summary from GitHub's choosealicense.com 
