YC Companies/Winter 2009

YC Winter 2009 Data Room

16 companies·Last synced Mar 26, 2026
16 of 16

Book accommodations around the world.

Consumer
B2B
Consumer

Sync and stream your music across any device. Acquired in 2009.

Consumer
Consumer

Heyzap (acquired by Fyber for $45m in 2016) is one of the largest…

Consumer
Consumer
B2B
Consumer
Consumer

Email search for iPhone. Acquired by Google in Feb 2010.

B2B

Browser-based spreadsheet.

B2B
Real Estate and Construction

Post-booking revenue and capacity optimization for airlines…

B2B
Consumer

Sensors and software for energy tracking. Like 'fitbit' for your…

Real Estate and Construction