Jajah was a VoIP (Voice over IP) provider, founded by Austrians Roman Scharf and Daniel Mattes in 2005.

Calls were made without download or user-installed software, and in most cases at rates lower than those of traditional phone companies or even free of charge.

The first beta version of the Jajah Webphone, a proprietary peer-to-peer internet telephony (VoIP) softphone, was released in July 2005.

Jajah Web version 1.1 (build 1714) including conference calls was released September 12, 2006.

[9] On April 28, 2008, Jajah provideds its proprietary telephony infrastructure, payment processing, and customer care to Yahoo!

[10] On April 14, 2011, Jajah announced a partnership with Globe Telecom to allow Filipinos living outside Philippines to call home at inexpensive rate.

In April 2011, Jajah introduced a VoIP application for Android phones that can be used with Facebook contacts.