Alternative target
A curated collection of the best open source alternatives to Microsoft 365. Each listing includes a website screenshot along with a detailed review of its features.
Tools
ONLYOFFICE Docs is a free collaborative online office suite comprising viewers and editors for texts‚ spreadsheets and presentations‚ forms and PDF‚ fully compatible with Office Open XML formats: .docx‚ .xlsx‚ .pptx and enabling collaborative editing in real time.
Open tool profileRead-only LibreOffice core repo - no pull request (use gerrit instead https://gerrit.libreoffice.org/) - don't download zip‚ use https://dev-www.libreoffice.org/bundles/ instead
Open tool profilePowerful online document editor with Microsoft Office compatibility. Integrate into your infrastructure or use trusted hosting partners for secure team collaboration.
Open tool profileSOGo offers multiple ways to access the calendaring and messaging data. CalDAV, CardDAV, GroupDAV, as well as ActiveSync, including native Outlook compatibility and Web interface.
Open tool profileOpen-source collaboration suite offering encrypted document editing, file sharing, and team workspaces with complete privacy protection.
Open tool profileA document management platform that helps you archive, organize, and search files with email ingestion, tagging capabilities, and powerful search functionality.
Open tool profileTuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.
Open tool profile