Name
Location
Size
Founded
OBLSK
Boston, United States
midsize
2016
OM30
So Paulo, Brazil
large
—
OXON
Liebefeld, Switzerland
small
2013
Octo
Reston, United States
massive
—
Octobox
United Kingdom
unknown
2005
Odeko
New York, United States
large
2019
Ohl
Seevetal, Germany
small
—
Olio
London, United Kingdom
big
2016
Olist
Brazil
massive
2015
Oliv AI
San Francisco, India
small
2019
Olympia
Mexico City, Mexico
small
2023
OmbuLabs
Philadelphia, United States
midsize
2011
On
Riyadh, Saudi Arabia
large
2010
One Door
Boston, United States
large
2000
OneSignal
Santa Clara, United States
large
2014
Onfido
London, United Kingdom
massive
2012
Ontra
San Francisco, United States
large
2014
OpTonal
Sacramento, United States
small
2021
Opal
Portland, United States
large
2011
OpenPlay
Santa Monica, United States
midsize
2013
Opendate
Indianapolis, United States
small
2019
Ophelos
London, United Kingdom
midsize
2019
Opinov8
Weybridge, United Kingdom
massive
2017