Zimbra
Zimbra Collaboration Suite (ZCS) is a collaborative software suite, that includes an email server and web client.
Zimbra was initially developed by LiquidSys, which changed their name to Zimbra, Inc. on 26 July 2005. The Zimbra Collaboration Suite was first released in 2005. The company was subsequently purchased by Yahoo in September 2007, and later sold to VMware on January 12, 2010. In July 2013, it was sold by VMware to Telligent Systems which changed its name to Zimbra, Inc. in September 2013. It was then acquired by Synacor Inc on 18 August 2015.