eXo Platform is an open-source social-collaboration software designed for enterprises. It is full featured, based on standards, extensible and has an amazing design. Thanks to how flexible it is, it can be used in the process of completing many different tasks at one.
eXo Platform on Github: https://github.com/exoplatform
eXo Platform on Crowdin: https://crowdin.com/project/exo-platform
My activity stream on Crowdin: https://crowdin.com/project/exo-platform/activity_stream
Screenshots which prove my work:
Posted on Utopian.io - Rewarding Open Source Contributors