According to this new post on the Zend Developer Zone, Zend has been nominated for the TiE group's top 50 emerging companies for 2009 in their Software category.

TiE is a non-profit organization that has laid the foundation for several hundred startup companies in Silicon Valley. [...] They are hosting their annual conference TieCON in mid May this year in Santa Clara and are expecting over 4000 attendees this year. As part of the conference this year, they are having this competition. Zend Technologies was nominated for the Software category, and out of the ~1200 nominated is now one of the 34 finalists.

You can help Zend make it to the top by casting your vote on the TiE page for "Zend Technologies". They're up against some pretty good competition (including Mint).