Sencha, a provider of HTML5 frameworks and tools for desktop and mobile application developers, has completed a $15 million Series B round of funding. Jafco Ventures led the round, with participation from existing investors Sequoia Capital and Radar Partners. As part of this financing Joe Horowitz, managing general partner of Jafco Ventures will join the Sencha board of directors.

Sencha had also closed a $14 million funding in June of last year.