Zimbra was initially developed by Zimbra, Inc., and 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.
According to former Zimbra President and CTO Scott Dietzen, the name for Zimbra is derived from the song "I Zimbra" by Talking Heads.
Zimbra Desktop is a full-featured free desktop email client which is still supported in version 7, but has reached End of Life in version 7.2.2 and will be replaced with an HTML5 offline mode in version 8.5.
The ZCS Web Client is a full-featured collaboration suite that supports email, group calendars, and document sharing using an Ajax web interface that enables tool tips, drag-and-drop items, and right-click menus in the UI. Also included are advanced searching capabilities and date relations, online document authoring, "Zimlet" mashups, and a full administration UI. It is written using the Zimbra Ajax Toolkit.