Open Source Alternatives to Microsoft 365
WordCraft
A Word-style word processor built in pure Rust
★ 10,768 Updated: Oct 2026 Status: Active
CryptPad
Encrypted collaboration suite
★ 8,006 Updated: Oct 2026 Status: Active
Collabora Online
LibreOffice-based online office suite
★ 3,370 Updated: Oct 2026 Status: Active
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EGroupware
Groupware server for email, calendar, contacts and projects
★ 298 Updated: Oct 2026 Status: Active
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Group Office
Groupware and CRM for small and mid-size teams
★ 282 Updated: Oct 2026 Status: Active