Wikipedia
Simdesk
Simdesk was a software as a service provider of on demand messaging and collaboration tools for business. Early in the company's history it sold to municipal authorities. The company began to commercially offer Simdesk direct to small business in March 2006. There were several Simdesk resellers including 1 KDDI in Japan.
On May 1, 2008 Simdesk ceased operations, including termination of retail hosted services for SMB and individual customers in the US and Latin America. It was announced that externally hosted services based on Simdesk's platform license would remain in place. (As of 2009, the URLs have gone dark.) Future direction has not been announced.