Open Source Alternatives to Microsoft 365
WordCraft
A Word-style word processor built in pure Rust
★ 15,636 Updated: Oct 2026 Status: Active
CryptPad
Encrypted collaboration suite
★ 8,026 Updated: Oct 2026 Status: Active
Collabora Online
LibreOffice-based online office suite
★ 3,383 Updated: Oct 2026 Status: Active
E
EGroupware
Groupware server for email, calendar, contacts and projects
★ 299 Updated: Oct 2026 Status: Active
G
Group Office
Groupware and CRM for small and mid-size teams
★ 284 Updated: Oct 2026 Status: Active
Calligra Suite
KDE's office and graphic art suite
★ 210 Updated: Oct 2026 Status: Active