50 Best Ad Server Companies to Watch in 2026

The most prominent ad server companies ranked by global prominence, funding activity, and market position. Showing the top 50 out of 82 companies tracked on Fsome.

82
Total Companies
$292.3M
Total Funding
$3.6M
Avg Funding
Paris
Top Location
# Company Location Employees Total Funding Last Round Last Funded
1
Kevel
Kevel is a developer of ad-serving APIs to help developers build server-side ad …
Durham 51 - 100 $45.1M Series C 2024-03-07
2
Clinch
Clinch is a central operating system for omnichannel advertising
New York 101 - 250 $16.9M Non Equity Assistance 2021-10-22
3
EX.CO
EX.CO is the smarter video technology using machine learning to maximize revenue…
New York 101 - 250 $65.7M Series C 2017-09-27
4
Odeeo
Odeeo’s audio ad platform amplifies the in-game experience to help studios and b…
Herzliya 11 - 50 $15.0M Seed 2024-09-04
5
Fluent, Inc
Fluent empowers brands to acquire and retain customers across the entire omnicha…
New York 101 - 250 $48.3M Post Ipo Debt 2025-12-02
6
Passendo
Passendo is a Copenhagen, Denmark-based startup providing email marketing servic…
Copenhagen 11 - 50 $3.2M Seed 2021-12-13
7
Koupon
Koupon provides c-store retailers and CPG brands with the easiest way to connect…
Addison 11 - 50 $16.3M Debt Financing 2020-07-27
8
AdHash
AdHash cuts out the middlemen to bring efficiency, trust, and privacy. We make t…
Zug 11 - 50 $1.3M Series A 2022-04-07
9
Sprout
Sprout provides a platform integrated with mobile ad networks and publishers, en…
San Francisco 11 - 50 $9.6M Series Unknown 2016-09-15
10
claimd. app
CLAIMD is re-inventing social media advertising.
Freiburg 11 - 50 $250K Seed 2022-04-07
11
Equativ
Equativ is an advertising technology company that offers a digital marketplace t…
Paris 501 - 1K Debt Financing 2021-07-01
12
ePublishing
ePublishing offers publishers and media companies with SaaS content management, …
Chicago 51 - 100 $749K Private Equity 2022-06-01
13
Streamion
Streamion is a digital marketing agency that offers advertising, branding, socia…
Valencia 1 - 10 $315K Pre Seed 2023-12-28
14
Emerse
Emerse is a Demand Side Platform (DSP) for programmatic media buying.
Lund 11 - 50 $2.5M Series B 2016-09-10
15
Fesbase
Fesbase is an internet company that offers a web-based and mobile-based platform…
Tokyo 11 - 50 $1.1M Seed 2022-06-10
16
ResponsiveAds
The brand performance adtech leader for producing, serving & optimizing high-imp…
New York 11 - 50 $390K Pre Seed 2016-02-22
17
CloudRanger
CloudRanger streamlines your backups, disaster recovery and server control for A…
Chicago 11 - 50 $1.1M Seed 2017-09-27
18
VIDCOIN
VIDCOIN has flipped the script on digital video ad serving to make true zero-lat…
Paris 11 - 50 $1.4M Series Unknown 2014-11-21
19
AdPushup
AdPushup is a revenue optimization platform that provides AdSense publishers, in…
Wilmington 101 - 250 $632K Series A 2016-08-07
20
Flashtalking
Flashtalking is an independent ad tech platform that offers digital marking, vid…
New York 251 - 500 Private Equity 2013-08-06
21
Medialets
Medialets is a media ad platform enabling businesses to create, deliver and meas…
New York 51 - 100 $33.4M Series Unknown 2014-01-07
22
Atlantis
Atlantis provides a free ad server and ad marketplace for the PC and mobile mark…
Tokyo 11 - 50 Seed 2008-02-01
23
ADSROCK
ADSROCK is a digital marketing company that provides ad account management and p…
Franca 1 - 10 Pre Seed 2019-01-01
24
Shopperception Inc
Shopperception is an in-store analytics and activation platform for grocers, pha…
Orlando 11 - 50 $920K Seed 2013-10-30
25
Notice Technologies
Notice Technologies provides analytics and campaigns to help brands reach consum…
Austin 1 - 10 Angel 2010-04-01
26
Adsparo
Adsparo offers interactive ad solutions to enhance engagement and improve campai…
Accra 1 - 10 Seed 2023-01-01
27
Republic Project
Republic Project offers a cloud-based ad platform that makes it easy to scale ca…
Santa Monica 11 - 50 $1.0M Series A 2012-09-01
28
Pheedo
Pheedo is a media advertising network working with publishers and advertisers to…
Oakland 11 - 50 $6.6M Debt Financing 2006-06-01
29
Screen Tonic
Screen Tonic offers a solution spanning from ad serving technology to ad managem…
Paris 1 - 10 $6.8M Series Unknown 2006-04-26
30
Mazeberry
Mazeberry is the best decision-making tool for e-commerce professionals
Lille 11 - 50 $964K Series Unknown 2015-12-01
31
Lat49
Lat49 is a location-focused advertising platform for online publishers and adver…
Vancouver 11 - 50 $3.8M Series A 2009-07-17