add Collabora

README.md

@@ -980,6 +980,7 @@ See https://github.com/n1trux/awesome-sysadmin#monitoring and https://github.com
 
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+- [Collabora Online](https://www.collaboraoffice.com/code/) - LibreOffice in the Cloud
 - [CryptPad](https://cryptpad.fr/) - CryptPad is the zero knowledge realtime collaborative editor (rich-text, files, source-code, ...). ([Source Code](https://github.com/xwiki-labs/cryptpad)) `AGPL-3.0` `Nodejs`
 - [EtherCalc](https://ethercalc.org/) - Web spreadsheet. ([Source Code](https://github.com/audreyt/ethercalc)) `CPAL-1.0/Other` `Nodejs`
 - [EtherDraw](https://github.com/JohnMcLear/draw) - Intuitive collaborative drawing web based tool. `Apache-2.0` `Nodejs`