Free EU EUROPE
Replaces
Gmail
Microsoft Outlook
KDE's integrated mail, calendar and contacts
Open source
Category
Browse Collaboration
Every ALT-TECH entry in this category.
EU EUROPE
Replaces
Google Docs
Microsoft 365
Notion
Collaborative documents the server cannot read
Open source
Free EU EUROPE
Replaces
Gmail
Google Drive
Google Workspace
A volunteer-run suite of free-software services
Open source
Free
Replaces
Microsoft Outlook
A full groupware client for the GNOME desktop
Open source
EUROPE
Replaces
Discord
Microsoft Teams
Slack
The flagship Matrix client, federated and self-hostable
Open source
EU EUROPE
Replaces
Google Workspace
Microsoft 365
Office editors with high Microsoft format fidelity
Open source
Replaces
Dropbox
Google Drive
Microsoft SharePoint
End-to-end encrypted storage built for teams
Proprietary
Free
Replaces
Google Sheets
Microsoft Excel
A collaborative spreadsheet with no accounts
Open source
Free
Replaces
Google Docs
Microsoft Word
The original real-time collaborative pad
Open source
EUROPE
Replaces
Google Workspace
Microsoft 365
LibreOffice in the browser, self-hosted
Open source
Free EU EUROPE
Replaces
Google Docs
Microsoft 365
Notion
A Franco-German public-sector alternative to Google Docs
Open source
Grist
for #Collaboration
Replaces
Airtable
Google Sheets
Microsoft Excel
A spreadsheet with a real database underneath
Open source
Replaces
Dropbox
Google Drive
OneDrive
Zero-knowledge storage built for teams
Proprietary
EUROPE
Replaces
Google Calendar
Google Contacts
iCloud
End-to-end encrypted calendar and contact sync
Open source
No tools match your filters.