Alternatives

Alternatives to Microsoft 365

Documented alternatives carry a source. Category neighbours are our inference and are listed separately, because a guess next to a fact looks like a fact.

Product	Vendor	Stated by	Evidence
Collabora Online	Collabora	Collabora on its own site	Vendor stated90% confidence Stated on the vendor's own site ("alternative to"): edit documents, spreadsheets, presentations in a browser is the core for an alternative to Microsoft 365. We feel Collabora is a very supportive, very flexible, very open partner which is fun to source (Primary documentation), retrieved 2026-09-02 · source (Primary documentation), retrieved 2026-09-14 · source (Primary documentation), retrieved 2026-10-16
IceWarp Mail Server	IceWarp	IceWarp on its own site	Vendor stated90% confidence Stated on the vendor's own site ("alternative to"): Explore features How does IceWarp compare to competitors? IceWarp is a full-featured alternative to Microsoft 365, Google Workspace, and others—offering email, collaboration, and conferencing tools in one platform, all at source (Primary documentation), retrieved 2026-09-14 · source (Primary documentation), retrieved 2026-10-16