Windmill (OSS source build)

Open-source alternative · mapped from 2 paid tools. Fit is not feature parity.

Facts

License

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

Paid-feature tier C

Self-host

Paid-feature limits3 noted

Kafka/NATS/SQS/cloud-event triggers and SQL Server/Oracle runtimes paid.
Content search, workspace error handlers, some Git/deployment features and enterprise governance paid.
Published free edition has workspace/user/group quotas; vendor Community Docker/release binaries include proprietary code with resale, hosting and modification restrictions.

Tier C: Non-enterprise source build is AGPLv3 with Apache client/spec components; proprietary snippets excluded. Commercial hosting of AGPL build is possible subject to AGPL. Vendor Community binaries are separately restricted, not the OSS artifact identified here. Workflow features are paid, so C. License source. Repository: windmill-labs/windmill. Self-host: server; hosted offer from the project: yes.

Replaces 2 paid tools

MakeEntry price Usage-based

Fit:

Developer-oriented scripts, schedules and flow orchestration; translate integrations and code rather than import Zaps/scenarios. Build OSS source if unrestricted AGPL hosting needed; common enterprise/event features paid.

Sources: www.windmill.dev, www.make.com · checked 2026-10-21
Full comparison: Make vs Windmill (OSS source build)
ZapierEntry price USD 19.99 / account / month

Fit:

Developer-oriented scripts, schedules and flow orchestration; translate integrations and code rather than import Zaps/scenarios. Build OSS source if unrestricted AGPL hosting needed; common enterprise/event features paid.

Sources: www.windmill.dev, zapier.com · checked 2026-10-21
Full comparison: Zapier vs Windmill (OSS source build)