Open Source Document Editors using C#

A curated collection of the best open source full office suites and collaborative document editors. using C#.

Free office suite with Microsoft compatibility

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

Open Source Alternative to:

Sent

Messaging Infrastructure for Developers. One API for SMS, WhatsApp, and RCS across 190+ countries.