How to find a startup that wants to buy a ready-made application

I sell a Macintosh app for college students who want to improve their academic success. Epiphany Workflow is about easily collect ideas, organizing ideas, and referring to ideas while writing. I'm a lousy marketeer. I'd love to sell it to a startup that would compensate me well for the 5 years it took to write it. I have no contacts in Silicon Valley. Who should I talk to?