Best Supply Side Platforms (SSP) - Page 3

How Many Supply Side Platforms (SSP) Products Does G2 Track?

Total Products under this Category: 102

Category Stats (Sep 2026)

  • Average Rating: 4.28/5 The average rating of products in this category, based on all submitted ratings

Last updated: September 01, 2026

How Does G2 Rank Supply Side Platforms (SSP) Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 1,100+ Authentic Reviews
  • 102+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for Supply Side Platforms (SSP)

G2 Grid® for Supply Side Platforms (SSP) plotting products by satisfaction and market presence

Highlighted products: Google Ad Manager, Opti Digital, 33Across, EX.CO, BidMachine, GaleForceMedia, Sharethrough, and OpenX.

Underlying data: [Grid® JSON](https://www.g2.com/categories/supply-side-platform-ssp/grids.json?focus%5B%5D=google-ad-manager&focus%5B%5D=opti-digital&focus%5B%5D=33across&focus%5B%5D=ex-co&focus%5B%5D=bidmachine&focus%5B%5D=galeforcemedia&focus%5B%5D=sharethrough&focus%5B%5D=openx)

Adextech

Largest Programmatic Digital Media Purchasing Marketplace. Efficiency And Scale Report. Use your own DSP (Demand Side Platform) or SSP (Supply Side Platform) platform with your own logo, brand, and ad space codes.

Average Rating: 4.6/5.0

Total Reviews: 7

Who Is the Company Behind Adextech?

  • Seller: Adextech
  • Year Founded: 2016
  • HQ Location: Sarıyer, TR
  • Twitter: @adextechcom
  • LinkedIn® Page: www.linkedin.com
    2 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 57% Small, 43% Medium

What Are Recent G2 Reviews of Adextech?

Admixer.SSP

Admixer SSP is a gateway to Admixer programmatic ecosystem for publishers, app developers, ad networks, sales houses who want to sell their inventory and audience via OpenRTB or Header Bidding connections. Main benefits: - Access to 100+ top-rated DSPs through a single account - Direct demand from Admixer.DSP (a self-service DSP for ad agencies) - 100% Risk-free demand. All ad creatives are scanned by leading ad verification vendors - Various ad formats (Display/Native/Video/Audio/Rich media templates) - Monetize any type of traffic (Desktop, Mobile Web, In-app, CTV, DOOH) Have any questions? Please contact us at https://admixer.net/contactus

Average Rating: 4.6/5.0

Total Reviews: 4

How Do G2 Users Rate Admixer.SSP?

  • SSP Functionality : 10.0/10 (Category avg: 8.3/10)
  • Impression Targeting: 10.0/10 (Category avg: 8.4/10)
  • Bid Reporting: 10.0/10 (Category avg: 8.1/10)

Who Is the Company Behind Admixer.SSP?

  • Seller: Admixer
  • Year Founded: 2008
  • HQ Location: London, GB
  • Twitter: @admixer
    135 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    89 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Marketing and Advertising
  • Company Size: 60% Medium, 40% Small

What Are Recent G2 Reviews of Admixer.SSP?

What Are G2 Users Discussing About Admixer.SSP?

Brand+ Marketplace (formerly Smaato)

Smaato's digital ad tech platform is the only omnichannel ad server and monetization solution with controls to make monetization simple. Publishers can bring their first-party data and manage all inventory in one place. Marketers get access to the highest-quality inventory so they can reach audiences around the world and on any device. Headquartered in San Francisco, Smaato is part of Verve Group, a Media and Games Invest (MGI) company, with additional offices in Hamburg, New York, Beijing, and Singapore. Learn more at www.smaato.com

Average Rating: 4.4/5.0

Total Reviews: 12

How Do G2 Users Rate Brand+ Marketplace (formerly Smaato)?

  • Ease of Admin: 9.2/10 (Category avg: 8.4/10)

Who Is the Company Behind Brand+ Marketplace (formerly Smaato)?

  • Seller: Verve Group
  • HQ Location: Carlsbad, California
  • LinkedIn® Page: www.linkedin.com
    534 employees on LinkedIn®
  • Ownership: STO: VER

Who Uses This Product?

  • Company Size: 46% Medium, 23% Small

What Are Recent G2 Reviews of Brand+ Marketplace (formerly Smaato)?

What Are G2 Users Discussing About Brand+ Marketplace (formerly Smaato)?

Equativ

Integrated ad management platform: RTB, Video, Mobile.

Average Rating: 4.0/5.0

Total Reviews: 11

How Do G2 Users Rate Equativ?

  • SSP Functionality : 9.4/10 (Category avg: 8.3/10)
  • Impression Targeting: 7.5/10 (Category avg: 8.4/10)
  • Ease of Admin: 8.3/10 (Category avg: 8.4/10)
  • Bid Reporting: 6.7/10 (Category avg: 8.1/10)

Who Is the Company Behind Equativ?

  • Seller: Equativ
  • Year Founded: 2001
  • HQ Location: Paris
  • Twitter: @Equativ
    2,361 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    735 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 58% Small, 25% Medium

What Are Recent G2 Reviews of Equativ?

Operative.One

Operative.One is the gold standard for digital ad management—powering the world’s top streaming platforms and over 100 distinct CTV services. As the industry’s leading order management system (OMS), Operative.One helps digital media companies maximize yield across channels, streamline operations, and accelerate revenue. This unified platform connects the entire quote-to-cash workflow, enabling sales and ops teams to do more with less. Sales teams can book more deals across linear and digital channels, while operations teams process more work with tools that free up time for strategic, high-value tasks. Whether you're monetizing video, display, mobile, or CTV, Operative.One transforms advertising operations into a revenue-generating machine, driving growth, efficiency, and scale.

Average Rating: 3.9/5.0

Total Reviews: 4

How Do G2 Users Rate Operative.One?

  • SSP Functionality : 8.3/10 (Category avg: 8.3/10)
  • Impression Targeting: 10.0/10 (Category avg: 8.4/10)
  • Ease of Admin: 8.3/10 (Category avg: 8.4/10)
  • Bid Reporting: 8.3/10 (Category avg: 8.1/10)

Who Is the Company Behind Operative.One?

  • Seller: Operative
  • Year Founded: 2000
  • HQ Location: New York, New York, United States
  • Twitter: @Operative_Media
    1,875 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    799 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 75% Large, 25% Medium

What Are Recent G2 Reviews of Operative.One?

What Are G2 Users Discussing About Operative.One?

Q1Media

Founded in 2004, Q1Media is an industry-leading digital advertising company serving businesses and agencies on the local, regional and national level. Q1Media’s team of digital media mavens are driven by the same purpose – to deliver world-class media services and campaign execution to our agency and brand partners. This is instilled through our passion, work ethic, expertise, and four Core Values: Earn Trust, Deliver Results, Learn and Be Curious, and Pay it Forward.

Average Rating: 4.1/5.0

Total Reviews: 4

How Do G2 Users Rate Q1Media?

  • SSP Functionality : 8.3/10 (Category avg: 8.3/10)
  • Impression Targeting: 8.3/10 (Category avg: 8.4/10)
  • Ease of Admin: 10.0/10 (Category avg: 8.4/10)
  • Bid Reporting: 6.7/10 (Category avg: 8.1/10)

Who Is the Company Behind Q1Media?

  • Seller: Q1 Media
  • Year Founded: 2004
  • HQ Location: Austin, US
  • Twitter: @Q1Media
    824 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    74 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 50% Small, 25% Large

What Are Recent G2 Reviews of Q1Media?

Broadsign

Broadsign is an end-to-end software solution for media owners and buyers to holistically plan, manage and deliver out-of-home media. For Media owners: Broadsign empowers media owners to efficiently scale, manage, and sell their digital and static out-of-home inventory through automated software, intelligent campaign tools, powerful network operations, and programmatic advertising. For Brands & Agencies: Reach audiences with dynamic and flexible campaigns that deliver quality impressions in real-time. With programmatic DOOH, you can deliver contextual, targeted messaging that drives impact at every stage of your audience's journey.

Average Rating: 4.4/5.0

Total Reviews: 15

How Do G2 Users Rate Broadsign?

  • Ease of Admin: 7.2/10 (Category avg: 8.4/10)

Who Is the Company Behind Broadsign?

  • Seller: Broadsign
  • Year Founded: 2004
  • HQ Location: Montreal, Quebec
  • Twitter: @BroadSign
    5,814 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    397 employees on LinkedIn®
  • Phone: 877-399-1184

Who Uses This Product?

  • Top Industries: Marketing and Advertising
  • Company Size: 47% Small, 27% Large

What Are Recent G2 Reviews of Broadsign?

What Are G2 Users Discussing About Broadsign?

Naviga Ad

Naviga Ad facilitates user-friendly and efficient selling in any possible combination of your print, digital and broadcast medias publications.

Average Rating: 4.5/5.0

Total Reviews: 3

How Do G2 Users Rate Naviga Ad?

  • SSP Functionality : 8.3/10 (Category avg: 8.3/10)
  • Impression Targeting: 6.7/10 (Category avg: 8.4/10)
  • Ease of Admin: 10.0/10 (Category avg: 8.4/10)
  • Bid Reporting: 8.3/10 (Category avg: 8.1/10)

Who Is the Company Behind Naviga Ad?

  • Seller: Naviga
  • Year Founded: 2013
  • HQ Location: Bloomington, MN
  • Twitter: @NavigaGlobal
    740 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    403 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 75% Medium, 25% Small

What Are Recent G2 Reviews of Naviga Ad?

Opera Ads

Opera Ads, the advertising platform by global web innovator Opera, powers advertising with extensive reach, user-centric engagement, and dedicated global support. It fuels monetization and user engagement through a comprehensive suite of products that includes Premium Ad Solutions, offering premium placements specific to Opera browsers, a demand-side platform (DSP) and a supply-side platform (SSP). The platform allows advertisers to leverage a vast audience across various channels, all within a brand-safe environment. By prioritizing trust, Opera Ads ensures impactful and transparent advertising experiences. Learn more at http://opera.com/ads.

Average Rating: 4.0/5.0

Total Reviews: 16

How Do G2 Users Rate Opera Ads?

  • SSP Functionality : 8.3/10 (Category avg: 8.3/10)
  • Impression Targeting: 8.3/10 (Category avg: 8.4/10)
  • Ease of Admin: 8.8/10 (Category avg: 8.4/10)
  • Bid Reporting: 8.3/10 (Category avg: 8.1/10)

Who Is the Company Behind Opera Ads?

  • Seller: Opera
  • Year Founded: 1995
  • HQ Location: Oslo, Norway
  • Twitter: @opera
    570,990 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    2,451 employees on LinkedIn®
  • Ownership: Opera Limited (NASDAQ: OPRA)

Who Uses This Product?

  • Company Size: 63% Small, 25% Medium

What Do G2 Reviewers Say About Opera Ads?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of Opera Ads, enabling quick setup and effective results with minimal complications.
  • Users appreciate the effective audience targeting of Opera Ads, enabling straightforward campaigns with genuine engagement and results.
  • Users value the wide audience reach of Opera Ads, appreciating the ease of targeting engaged users effectively.
  • Users appreciate how easy and straightforward Opera Ads is, allowing for quick setup and effective campaign management.
  • Users appreciate the easy setup of Opera Ads, allowing for straightforward integration and effective campaign management.
Cons
  • Users find the limited reporting in Opera Ads hinders detailed insights into audience behavior and campaign performance.
  • Users find the reporting in Opera Ads lacking, desiring more detailed insights into performance and user behavior.
  • Users find inefficient targeting in Opera Ads limits optimization and affects reporting and user tracking capabilities.
  • Users find the limited features of Opera Ads restrict meaningful optimization and detailed reporting capabilities.
  • Users find the targeting options limited, hindering deeper optimization and detailed insights in their ad campaigns.

What Are Recent G2 Reviews of Opera Ads?

SelectMedia

SelectMedia is a global video supply platform.

Average Rating: 3.8/5.0

Total Reviews: 3

How Do G2 Users Rate SelectMedia?

  • SSP Functionality : 8.3/10 (Category avg: 8.3/10)
  • Impression Targeting: 8.3/10 (Category avg: 8.4/10)
  • Bid Reporting: 7.8/10 (Category avg: 8.1/10)

Who Is the Company Behind SelectMedia?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of SelectMedia?

sovrn

Sovrn provides products and services to thousands of online publishers to help them understand, operate and grow their business. Sovrn is headquartered in Boulder, Colorado, with offices in New York, London and San Diego. With thousands of customers deploying advertising, affiliate marketing, and data products across 50,000 websites, Sovrn reaches over 400 million active consumers across more than 20 billion page views every day. Sovrn has been a leader in online publisher technology since its founding and has been recognized by IAB, JICWEBS, and TAG for its role in combating fraud and promoting pro-transparency initiatives. Sovrn is dedicated to helping content creators do more of what they love, and less of what they don't.

Average Rating: 3.7/5.0

Total Reviews: 5

How Do G2 Users Rate sovrn?

  • SSP Functionality : 8.3/10 (Category avg: 8.3/10)
  • Impression Targeting: 9.2/10 (Category avg: 8.4/10)
  • Bid Reporting: 10.0/10 (Category avg: 8.1/10)

Who Is the Company Behind sovrn?

  • Seller: sovrn Holdings
  • Year Founded: 2014
  • HQ Location: Boulder, US
  • Twitter: @sovrnholdings
    6,090 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    185 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of sovrn?

Verizon Media SSP

Verizon Media's Supply Side Platform is a comprehensive solution designed to help publishers maximize their advertising revenue by efficiently managing and monetizing their digital inventory. By integrating advanced technologies and data-driven insights, the platform enables publishers to connect with premium demand sources, ensuring optimal fill rates and competitive pricing. Key Features and Functionality: - Unified Auction Mechanism: The SSP employs a real-time, unified auction process that allows programmatic demand to compete with reserved bids within the publisher’s ad server. This ensures that each ad opportunity is filled with the highest bid, regardless of the demand source. - Advanced Advertising Tools: The platform offers tools like Smartplay Prebid, a server-side integration that exposes inventory to more demand partners using the prebid open-source framework. This enhances transparency in the bidding process and provides visibility into content value with price transparency. - Comprehensive Inventory Access: Publishers gain access to a diverse range of demand sources, including Verizon Media's own demand-side platform , which is integrated with the SSP. This integration facilitates a seamless connection between supply and demand, optimizing revenue potential. - Enhanced Transparency and Control: The SSP provides publishers with greater transparency into auction dynamics, allowing them to better understand the value of their inventory and make informed decisions to optimize their monetization strategies. Primary Value and User Solutions: Verizon Media's SSP addresses the challenges publishers face in the evolving digital advertising landscape by offering a unified platform that streamlines the management and monetization of digital inventory. By facilitating access to premium demand sources and implementing advanced auction mechanisms, the SSP ensures that publishers can maximize their revenue potential. Additionally, the platform's emphasis on transparency and control empowers publishers to make data-driven decisions, enhancing their ability to adapt to market changes and maintain a competitive edge.

Average Rating: 4.5/5.0

Total Reviews: 3

How Do G2 Users Rate Verizon Media SSP?

  • Ease of Admin: 8.3/10 (Category avg: 8.4/10)

Who Is the Company Behind Verizon Media SSP?

  • Seller: Verizon Media
  • Year Founded: 2005
  • HQ Location: San Francisco, CA
  • Twitter: @FlurryMobile
    16,225 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    11 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 67% Small, 33% Large

What Are Recent G2 Reviews of Verizon Media SSP?

WideOrbit

Founded in 1999, WideOrbit helps media companies do more business by making it easier to sell advertising. We offer the one platform that ties everything together, from pitch to payment, across digital, linear, and cross-platform advertising. WideOrbit remains at the forefront of the industry by focusing on automation and integrations to streamline digital, linear, and cross-platform workflows and advancing our digital solutions to address the needs of broadcasters, digital publishers, and advertisers. WideOrbit is headquartered in New York, with offices worldwide. Customers include NBCUniversal, ViacomCBS, ABC/Disney, Fox, Paramount, Hearst, TelevisaUnivision, Gray Television, TEGNA, and many other major media companies around the world. WideOrbit is a wholly owned subsidiary within the Lumine Group companies. Lumine Group Inc. (TSXV:LMN), is a Canadian listed company, with Constellation Software Inc., (TSX:CSU), a multi-billion dollar public company, as its majority shareholder.

Average Rating: 4.1/5.0

Total Reviews: 50

How Do G2 Users Rate WideOrbit?

  • SSP Functionality : 5.0/10 (Category avg: 8.3/10)
  • Impression Targeting: 5.0/10 (Category avg: 8.4/10)
  • Ease of Admin: 8.3/10 (Category avg: 8.4/10)
  • Bid Reporting: 5.0/10 (Category avg: 8.1/10)

Who Is the Company Behind WideOrbit?

Who Uses This Product?

  • Top Industries: Broadcast Media, Marketing and Advertising
  • Company Size: 44% Medium, 34% Large

What Do G2 Reviewers Say About WideOrbit?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the reliable automation of WideOrbit, ensuring seamless programming continuity even during system failures.
  • Users admire the ease of use of WideOrbit, appreciating its reliable on-air performance and intuitive layout.
  • Users appreciate the reliable performance and seamless programming of WideOrbit, making it a useful tool for broadcasting.
  • Users value the reliable on-air performance of WideOrbit, ensuring seamless programming even during system failures.
  • Users value the reliability and seamless on-air automation of WideOrbit, ensuring uninterrupted programming even during computer issues.
Cons
  • Users experience budget management delays due to configuration issues, complicating live usage and playback effectiveness.
  • Users experience delayed implementation issues with WideOrbit, leading to slow playback and potential program crashes during live usage.
  • Users experience delay issues with WideOrbit, affecting live usage and causing playback and functionality inconsistencies.
  • Users often face editing difficulties with WideOrbit, experiencing delays and unpredictable behavior during live usage.
  • Users experience functionality limitations with delays and crashes, impacting the efficiency of live usage.

What Are Recent G2 Reviews of WideOrbit?

What Are G2 Users Discussing About WideOrbit?

Adform Integrated Advertising Platform

The Integrated Advertising Platform provides a centralized command center for creating, activating, and managing campaigns across all channels and the corresponding media in one place with a unified experience and technology. Our holistic approach has not only focused on reducing unnecessary steps, redundant tasks, and unwarranted complexity in the DSP, DMP, and Ad Server. The IAP also closes the gaps between these technologies and delivers a seamless integration providing significant benefits. Ideal for medium to large enterprises in local or global markets.

Average Rating: 4.3/5.0

Total Reviews: 10

How Do G2 Users Rate Adform Integrated Advertising Platform?

  • SSP Functionality : 8.3/10 (Category avg: 8.3/10)
  • Impression Targeting: 9.2/10 (Category avg: 8.4/10)
  • Ease of Admin: 10.0/10 (Category avg: 8.4/10)
  • Bid Reporting: 10.0/10 (Category avg: 8.1/10)

Who Is the Company Behind Adform Integrated Advertising Platform?

  • Seller: Adform
  • Year Founded: 2002
  • HQ Location: Copenhagen, Capital Region
  • LinkedIn® Page: www.linkedin.com
    871 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Marketing and Advertising
  • Company Size: 55% Small, 45% Medium

What Are Recent G2 Reviews of Adform Integrated Advertising Platform?

What Are G2 Users Discussing About Adform Integrated Advertising Platform?

ADYOULIKE

The company enables brands to scale native advertising campaigns across premium and niche publishers, while publishers benefit from access to ADYOULIKE’s marketplace.

Average Rating: 4.3/5.0

Total Reviews: 2

How Do G2 Users Rate ADYOULIKE?

  • SSP Functionality : 10.0/10 (Category avg: 8.3/10)
  • Impression Targeting: 10.0/10 (Category avg: 8.4/10)
  • Bid Reporting: 6.7/10 (Category avg: 8.1/10)

Who Is the Company Behind ADYOULIKE?

  • Seller: ADYOULIKE
  • Year Founded: 2011
  • HQ Location: MAIDENHEAD, GB
  • Twitter: @Adyoulike
    1,991 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 50% Large, 50% Medium

What Are Recent G2 Reviews of ADYOULIKE?

What Are G2 Users Discussing About ADYOULIKE?

Yukta Rustagi
YR
Researched and written by Yukta Rustagi
Updated October 3, 2024