- [ONLYOFFICE](https://helpcenter.onlyoffice.com/faq/server-opensource.aspx) - Office suite that enables you to manage documents, projects, team and customer relations in one place. ([Source Code](https://github.com/ONLYOFFICE/DocumentServer)) `AGPL-3.0``Nodejs`
- [PHPOffice](https://github.com/PHPOffice) - PHPOffice contains libraries which permits to write and read files from most office suites. `LGPL-3.0``PHP`
- [Rustpad](https://rustpad.io/) - Efficient and minimal collaborative code editor, self-hosted, no database required. ([Source Code](https://github.com/ekzhang/rustpad)) `MIT``Rust`
- [WebODF](http://webodf.org/) - Tools and libraries to view and edit Open Document Format (ODF) files. ([Source Code](https://github.com/kogmbh/WebODF)) `AGPL-3.0``HTML5`
- [WebODF](http://webodf.org/) - Tools and libraries to view and edit Open Document Format (ODF) files. ([Source Code](https://github.com/webodf/WebODF)) `AGPL-3.0``HTML5`