最佳开源 Collaboration & Communication

Open-source collaboration suite offering encrypted document editing, file sharing, and team workspaces with complete privacy protection.

Open-source collaboration platform combining real-time chat, document editing, file sharing, and project management. Self-host for complete control.

Open-source online editor for documents, spreadsheets, presentations, and PDFs. Features real-time collaboration, AI integration, and accessibility tools.

Complete free office suite compatible with Microsoft formats (.doc, .docx, .xls, .xlsx, .ppt, .pptx). Open source alternative with regular updates.