I don't know if they qualify as startups, but here are two examples: Mint (http://www.haveamint.com http://www.haveamint.com) and FogBugz (http://www.fogcreek.

I don't know if they qualify as startups, but here are two examples: Mint (http://www.haveamint.com http://www.haveamint.com) and FogBugz (http://www.fogcreek.com/FogBugz/ http://www.fogcreek.com/FogBugz/) You can buy and self-host these products, with source code included.