ONLYOFFICE

Open-source real-time collaborative text editor you can self-host.

CryptPad is an end-to-end encrypted, zero-knowledge collaborative office suite. Write, edit, and share documents, sheets, and code with confidence that servers never read them.

Open-source spreadsheet-database hybrid with flexible relational data modeling.

Real-time collaborative markdown note editor you can self-host — write together with rich formatting and seamless sharing.

A powerful free and open source office suite with word processing, spreadsheets, presentations, and more.

Open-source Excel-style spreadsheet in pure Rust — formulas, dynamic arrays, PivotTables, charts and XLSX round-trip.