Microsoft 365 vs ownCloud Infinite Scale (oCIS source edition)

Fit:

Migration notes

Replaces Drive/OneDrive file sync/share portion with team spaces and WebDAV APIs; Office editors integrated separately. Mail/calendar/meetings and proprietary tenant services require other products. Choose source or vendor build after checking relevant distribution terms.

Sources: github.com, owncloud.com · checked 2026-10-21

Microsoft 365Paid incumbent

Entry priceUSD 5.40 / seat / month

Pricing modelper-seat, billed annual

OwnerMicrosoft Corporation

Business Basic without Teams USD $5.40/user/month paid yearly; web/mobile apps. Basic with Teams $7; desktop apps require another plan. Source

Microsoft 365 plans reviewed
Business Basic (no Teams)	entry	USD 64.80 / user / yr
Business Standard with Copilot	business	USD 282 / user / yr
Microsoft 365 E7	enterprise	USD 1,188 / user / yr

ownCloud Infinite Scale (oCIS source edition)Open-source alternative

Fit for Microsoft 365

License

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

Paid-feature tier B

Self-host

Paid-feature limits1 noted

ownCloud Infinite Scale (oCIS source edition) plans reviewed
Apache-2.0 source edition	source-build open edition	Free
Standard	vendor commercial on-premises package	Quote only
Enterprise	vendor commercial enterprise package	Quote only

What you may give up

Enterprise compliance and policy-enforcement layer

Tier B: Apache-2.0 backend plus in-tree web source; May 2026 vendor statement defines complete core EFSS/federation/APIs/governance/clients with enterprise compliance extras. Some vendor stable binaries carry separate EULA; source-build rights and vendor packaged licensing must be distinguished. Exact enterprise boundary not exhaustively enumerated. Hosted ownCloud offering exists, but its backend/version equivalence to this source edition is not verified. License source

What running it takes

oCIS binary or container

Embedded identity provider
or
External OIDC provider such as Keycloak

Hover or focus an icon for its name. Dashed means not established; struck through means no; grouped icons are alternatives.

Self-contained default has no external SQL database/IdP requirement. Current official next links redirect to9.0 docs, whereas public repository release metadata cites8.2.2; version-specific production matrix not fully reconciled. No unsupported universal Redis/queue requirement asserted. Infrastructure and staff time are not priced here; this page does not compare total cost.