Rockmelt was a proprietary social mediaweb browser developed by Tim Howes and Eric Vishria based on the GoogleChromium project, incorporating social media features such as Facebook chat, Twitter notifications and widgetised areas for other content providers such as YouTube and local newspapers. The Rockmelt web browser project was backed by Netscape founder Marc Andreessen. As of April 2013, Rockmelt discontinued its desktop web browser, replacing it with a collaborative project bringing together social elements from various sources.
Although the browser was launched in private beta on November 8, 2010 for desktop, it is not currently supported on the PC or Mac due to work on the iPad and other mobile releases. Rockmelt is now exclusively for iOS (both iPhone and iPad) and Android with versions for Windows 8, and desktop planned.
Rockmelt was created by Rockmelt, Inc., located in Mountain View, California. The final version, 2.2.0, was released on February 9, 2013.
On August 2, 2013, Yahoo! acquired Rockmelt. Rockmelt’s apps and website were shut down after August 31, 2013. Yahoo! plans to integrate Rockmelt’s technology throughout various products.
November 7, 2010 - Rockmelt for PC and Mac launches in private beta
March 11, 2011 - Rockmelt for PC and Mac launches in open beta 
April 19, 2011 - Rockmelt for iPhone launches 
October 11, 2012 - Rockmelt for iPad launches 
December 20, 2012 - a new Rockmelt for iPhone launches 
^"What happened to Rockmelt for PC/Mac?". 2012-11-28. Retrieved 2012-12-24. "We’ve fallen behind Chromium (the open source browser upon which Rockmelt is based). This means some of your extensions no longer work, and a few security issues have gone unpatched."