Airbnb
Public
What they do:
Book accommodations around the world.
Quick facts:
HQ: San Francisco, CA, United States
Y Combinator Winter 2009 Startups
This list has 16 startups and was last updated on Oct 15, 2026. 1 of them are hiring right now. Largest teams: Airbnb, Volantio, and Heyzap.
16 startups
Volantio
Hiring
What they do:
Post-booking revenue and capacity optimization for airlines…
Quick facts:
HQ: Atlanta, GA, United States
Heyzap
Acquired
What they do:
Heyzap (acquired by Fyber for $45m in 2016) is one of the largest…
Quick facts:
HQ: San Francisco, CA, United States
Cloudkick
Acquired
What they do:
Cloudkick is system to manage cloud servers, such as the Rackspace Cloud and Amazon's EC2. Cloudkick provides an easy to use monitoring/alerting solution to…
Quick facts:
HQ: San Francisco, CA, United States
Divvyshot
Acquired
What they do:
Divvyshot is a photo-sharing platform that enables users to share full resolution photos with friends.
Quick facts:
HQ: San Francisco, CA, United States
Echodio
Acquired
What they do:
Sync and stream your music across any device. Acquired in 2009.
Quick facts:
HQ: San Francisco, CA, United States
reMail
Acquired
What they do:
Email search for iPhone. Acquired by Google in Feb 2010.
Quick facts:
HQ: CA, United States
Foodoro
Shut down
What they do:
Foodoro is a marketplace where people can buy specialty food directly from artisanal Foodmakers Our goal is to help people discover amazing food products and…
Quick facts:
HQ: San Francisco, CA, United States
Skysheet
Shut down
What they do:
Browser-based spreadsheet.
Quick facts:
Picurio
Shut down
What they do:
Picurio is web-based photo sharing and photo management software.
Quick facts:
HQ: San Francisco, CA, United States
Voxli
Shut down
What they do:
Voxli offers browser-based group voice chat for gamers and teams. Users of Voxli can voice chat with up to 200 people at a time without leaving the browser…
Quick facts:
HQ: CA, United States
Recurious
Shut down
What they do:
thesixtyone is Digg for new music, a social filter for the tsunami of indie creativity hitting the web. Like Digg, the homepage is community driven. Listeners…
Quick facts:
HQ: San Francisco, CA, United States
YC W09Early stage
Wattvision
Shut down
What they do:
Sensors and software for energy tracking. Like 'fitbit' for your…
Quick facts:
HQ: Princeton, NJ, United States
Nambii
Shut down
What they do:
Nambii is an online dating service with iPhone applications that allow users to send and receive flirts with people around them.
Quick facts:
HQ: San Francisco, CA, United States
YC W09Early stage
PetaSales
Shut down
Quick facts:
HQ: San Francisco, CA, United States
Spaces Life
Shut down
Quick facts:
YC W09Early stage
Questions and answers
How many startups are on this list?
There are 16 startups on this list, last updated on Oct 15, 2026.
Which of them are hiring?
1 of them are hiring right now, including Volantio.
Which of them have the largest teams?
By team size: Airbnb (6,132 employees), Volantio (19 employees), and Heyzap (11 employees).