Self-hostable software: Office Suites (11)

Etherpad is a real-time collaborative web editor for creating and editing shared pads.

LanguageTool is open-source proofreading software that detects writing errors across many languages and offers server, command-line, GUI, and HTTP API usage.

Grist is a modern relational spreadsheet that combines spreadsheet flexibility with database-like structure.

CryptPad is an end-to-end encrypted collaboration suite for real-time editing of documents and other team content.

Sandstorm is a self-hostable web productivity suite for running apps on your own server.

A collaborative online office suite for viewing, editing, creating, and exporting documents, spreadsheets, presentations, forms, PDFs, and diagrams.

FileRise is a self-hosted web file manager and storage hub with WebDAV, sharing, ACLs, uploads, and optional OnlyOffice and encryption features.

Free web software for signing, organizing, editing metadata, and compressing PDFs.

Create multimedia presentations in a quick and easy way. (documentation in French).

The most comprehensive and integrated Free / Libre / Open Source enterprise software suite.

Collabora Online Development Edition (CODE) is a powerful LibreOffice-based online office that supports all major document, spreadsheet and presentation file formats, which you can integrate in your own infrastructure.