3 Best Open Source Office Online Alternatives
A curated collection of the 3 best open source and self-hosted alternatives to Office Online in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Office Online in 2026? The top open-source alternative is CryptPad — Open-source collaboration suite offering encrypted document editing, file sharing, and team workspaces with complete privacy protection..
Other highly rated open-source Office Online alternatives include LibreOffice and Collabora Online.
Open-source collaboration suite offering encrypted document editing, file sharing, and team workspaces with complete privacy protection.
Open-source collaboration suite offering encrypted document editing, file sharing, and team workspaces with complete privacy protection.
Complete free office suite compatible with Microsoft formats (.doc, .docx, .xls, .xlsx, .ppt, .pptx). Open source alternative with regular updates.
Complete free office suite compatible with Microsoft formats (.doc, .docx, .xls, .xlsx, .ppt, .pptx). Open source alternative with regular updates.
Powerful online document editor with Microsoft Office compatibility. Integrate into your infrastructure or use trusted hosting partners for secure team collaboration.
Powerful online document editor with Microsoft Office compatibility. Integrate into your infrastructure or use trusted hosting partners for secure team collaboration.
About Office Online
A web-based version of Microsoft Office that allows users to access and collaborate on documents, spreadsheets, and presentations online.