#1
CryptPad is an end-to-end encrypted collaboration suite with real-time editors, file storage, and sharing, designed to keep document contents private from servers and admins.
7.8k stars836 forksAGPL-3.0last commit Actively maintained
5 self-hosted Microsoft PowerPoint alternatives
Presentation application for creating, editing and delivering slide decks. Provides templates, animations, transitions, speaker notes, multimedia embedding, export options (PDF, video) and collaboration via Microsoft 365 cloud storage and real-time coauthoring.
Alternatives to Microsoft PowerPoint
Self-hostable online office suite for viewing and collaboratively editing documents, spreadsheets, presentations, PDFs, and forms with strong OOXML compatibility.
6.7k stars1.3k forksAGPL-3.0last commit Actively maintained
#3
IronCalc is a modern open-source spreadsheet engine for building and embedding spreadsheets, with XLSX reading/writing and language bindings including WebAssembly.
4k stars162 forksApache-2.0last commit Actively maintained
Self-hosted collaborative office suite for Nextcloud providing real-time editing, high-fidelity rendering and support for DOCX, XLSX, PPTX and ODF formats.
453 stars145 forkslast commit Actively maintained
Collabora Online Development Edition (CODE) provides a self-hosted LibreOffice-based online editor for documents, spreadsheets and presentations for testing or small teams.
Activity unknown
What replacing Microsoft PowerPoint actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 4 of 5 shipped a commit in the last six months. Licences in this list: AGPL-3.0, Apache-2.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Collaborative Office Suites.
