33Across Alternatives (January 2026)

33Across

Home | 33Across

https://www.33acros.com/

33Across provides the addressable infrastructure for the open web. Using Lexicon, Publishers, DSPs, SSPs, and Data Companies seamlessly unlock cookie alternative supply.

4.3/5

124+ reviews

Reviewed on:

G2
1.
Home - Equativ
http://smartadserve
.com/

Equativ - Built To Fulfill The Promise Of Advertising Technology

2.
OpenX: Programmatic Advertising | Supply-Side Platform
https://www.open
.com/

OpenX is the most dynamic independent supply-side platform and delivers a fair and transparent value exchange between publishers and advertisers to help power the open web. Learn more.

3.
Digital Advertising Technology Powered by People l Viant
https://www.viantin
.com/

Viant, a pioneer in people-based digital advertising on the New Open Web, provides marketers the tools to move beyond third-party cookies.

4.
MediaMath - Built for this moment, and the next.
https://www.mediamat
.com/

We deliver the most responsive, accountable and performant digital advertising technology for brands to buy addressable media.

5.
TripleLift - Programmatic Advertising Platform Reinvented
https://triplelif
.com/

Technology at the intersection of creative and media, delivering the next generation of programmatic advertising platforms.

6.
Home | Celtra
https://www.celtr
.com/

From scaling digital ads to performance creative and building premium ad suites, advertisers and media companies can do it all with Celtra.

7.
Sharethrough — Human-Centric Programmatic Advertising
https://www.sharethroug
.com/

Sharethrough is an omnichannel supply side platform underpinned by advanced RTB tech & enhanced ad experiences. We bring human-centric technology to programmatic advertising.

8.
Advertising Solutions for Publishers and Marketers | BuySellAds
https://www.buysellad
.com/

BuySellAds builds advertising solutions for publishers and marketers. Sell ads with powerful advertising technology, or buy ads that reach audiences at scale.

9.
Programmatic Advertising Technology Company | PubMatic
https://pubmati
.com/

Learn how PubMatic, a sell-side advertising technology company, maximizes customer value & puts you in control of your digital advertising business.