RightScale co-founder Siegel Sells To Rackspace

Jonathan Siegel, who co-founded Santa Barbara-based startups RightScale, RightCart, and RightSignature, has scored an exit today, and has sold Exceptional Cloud Services, his latest cloud software startup, to cloud hosting provider RackSpace. Financial terms of the acquisition were not announced by the companies. Siegel joins Rackspace as part of the deal. Exceptional was based in San Francisco, and develops tools used for tracking and fixing errors from web applications. Siegel also headed by software development firm ELC Technologies.