# Best Supply Side Platforms (SSP) for Small Business ## How Many Supply Side Platforms (SSP) Products Does G2 Track? **Total Products under this Category:** 101 ### Category Stats (Aug 2026) - **Average Rating:** 4.28/5 The average rating of products in this category, based on all submitted ratings _Last updated: August 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 - 101+ 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](https://www.g2.com/categories/supply-side-platform-ssp/grids.png?focus%5B%5D=5110&focus%5B%5D=1405571&focus%5B%5D=101287&focus%5B%5D=65056&focus%5B%5D=83069&focus%5B%5D=57885) Highlighted products: Google Ad Manager, Opti Digital, GaleForceMedia, 33Across, PayTunes, and Automatad. 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=galeforcemedia&focus%5B%5D=33across&focus%5B%5D=paytunes&focus%5B%5D=automatad&segment=small-business) **Sponsored** ### BidMachine BidMachine is a mobile advertising platform that helps app publishers grow in-app ad revenue and gives advertisers, DSPs, and agencies access to SDK-direct in-app inventory with first-party signals. The platform operates as both an in-app bidding solution and a supply-side platform, connecting mobile publishers to programmatic demand through a lightweight SDK integration. Publishers add incremental demand sources to their existing monetization stack, run transparent real-time auctions, and access brand advertiser budgets through direct, SPO-aligned supply paths. BidMachine processes over 1 trillion ad requests monthly and reaches 600 million verified SDK users across gaming, utility, and lifestyle apps. Core features: SDK: lightweight in-app bidding integration that adds premium global demand to publisher auctions, built to minimize latency and preserve app performance Mediation: transparent auction mechanics with full visibility into how demand sources compete, including pricing, fill data, and demand prioritization controls Exchange: PMP and open auction access for DSPs and agencies buying SDK-powered in-app inventory with first-party signals and SPO-aligned supply paths UA: performance campaign tools for advertisers and UA teams, with CPI and ROAS optimization powered by rich in-app signals and unified reporting across inventory, creatives, and geos DIRECT Placements: a dedicated supply path that routes brand advertiser budgets to premium publishers through SDK-direct, SPO-aligned inventory, with onboarding taking approximately two weeks after agreement signing and ads.txt update Who uses BidMachine: Publishers and monetization managers growing ARPDAU and LTV by adding incremental demand alongside existing networks Advertisers and UA teams running performance campaigns who need high-quality, SDK-direct in-app supply DSPs and agencies seeking cleaner supply paths with richer first-party signals for programmatic buying Publishers can get started via self-serve sign-up or by contacting the sales team directly. [Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=286&secure%5Bchosen_at%5D=2026-08-06T16%3A01%3A26Z&secure%5Bdisplayable_resource_id%5D=615&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=neighbor_category&secure%5Bplacement_resource_ids%5D%5B%5D=615&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=1702679&secure%5Bresource_id%5D=286&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fsupply-side-platform-ssp%2Fsmall-business%3Fopen_modal_url%3D%252Fproducts%252Fgoogle-ad-manager%252Fwishlists%253Fhost_path%253D%25252Fcategories%25252Fsupply-side-platform-ssp%25252Fsmall-business%2526source%253Dcategory&secure%5Btoken%5D=918c8ebccc3636728d046116175c71f097367bf2ada13df64fa55486319fb899&secure%5Burl%5D=https%3A%2F%2Fhubs.ly%2FQ04j068b0&secure%5Burl_type%5D=custom_url) ### [Google Ad Manager](https://www.g2.com/products/google-ad-manager/reviews) DoubleClick for Publishers is a complete ad revenue engine that helps publishers capture the full value of every impression across demand sources and channels. Seamless integration with DoubleClick Ad Exchange provides instant connection to millions of quality advertisers, while the natively integrated sales management platform streamlines operations for maximized sales at minimized costs. **Average Rating:** 4.2/5.0 **Total Reviews:** 232 #### How Do G2 Users Rate Google Ad Manager? - **SSP Functionality :** 8.2/10 (Category avg: 8.3/10) - **Impression Targeting:** 8.6/10 (Category avg: 8.4/10) - **Ease of Admin:** 7.9/10 (Category avg: 8.4/10) - **Bid Reporting:** 8.2/10 (Category avg: 8.1/10) #### Who Is the Company Behind Google Ad Manager? - **Seller:** [Google](https://www.g2.com/sellers/google) - **Year Founded:** 1998 - **HQ Location:** Mountain View, CA - **Twitter:** @google 31,899,995 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=fe4a5936665c9702418dd53c477fef5a7baea08078bb117ed67e966fc581b9ec&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F1441%2F&secure%5Burl_type%5D=linkedin_company_website) 341,888 employees on LinkedIn® - **Ownership:** NASDAQ:GOOG #### Who Uses This Product? - **Top Industries:** Marketing and Advertising, Publishing - **Company Size:** 42% Medium, 37% Small #### What Are Recent G2 Reviews of Google Ad Manager? **["Maximizes Revenue, But Complex Setup"](https://www.g2.com/survey_responses/google-ad-manager-review-12731507)** **Rating:** 4.5/5.0 stars _— Wijbren v._ [Read full review](https://www.g2.com/survey_responses/google-ad-manager-review-12731507) **["All-in-One Ad Management with Powerful Targeting and Clear Reporting"](https://www.g2.com/survey_responses/google-ad-manager-review-12640899)** **Rating:** 5.0/5.0 stars _— pankaj p._ [Read full review](https://www.g2.com/survey_responses/google-ad-manager-review-12640899) #### What Are G2 Users Discussing About Google Ad Manager? - [What is Google Ad Manager used for?](https://www.g2.com/discussions/google-ad-manager-what-is-google-ad-manager-used-for) - [What is Google's SSP called?](https://www.g2.com/discussions/what-is-google-s-ssp-called) - [How do I use Google Ad Manager?](https://www.g2.com/discussions/how-do-i-use-google-ad-manager) - 1 comment - [Is Google Ad Manager An SSP?](https://www.g2.com/discussions/is-google-ad-manager-an-ssp) - 2 comments - [What is Google Ad Manager used for?](https://www.g2.com/discussions/what-is-google-ad-manager-used-for) - 1 comment ### [Opti Digital](https://www.g2.com/products/opti-digital/reviews) Opti Digital is an advertising technology (AdTech) designed to help media publishers optimize their advertising revenue through innovative and effective strategies. Established in 2018, Opti Digital focuses on providing advanced technologies that enhance the monetization capabilities of publishers and advertisers alike. With a commitment to innovation and efficiency, the company employs cutting-edge solutions such as dynamic flooring, original ad formats, ad optimization features, real-time granular insights and an ad management wrapper to meet the evolving needs of the digital advertising landscape. The target audience for Opti Digital includes global media publishers and channel partners seeking to maximize their advertising revenue while navigating the complexities of the digital marketplace. By leveraging artificial intelligence and data-driven strategies, Opti Digital empowers its clients to unlock new monetization opportunities and remain competitive in a rapidly changing environment. The platform is particularly beneficial for publishers who are looking to enhance their ad performance and optimize their ad inventory management. Key features of Opti Digital include dynamic price flooring, which allows publishers to set flexible pricing strategies for their ad inventory, and innovative ad formats, based on social display ads that engage users while maximizing revenue potential. The ad management wrapper simplifies the integration of various ad technologies, enabling publishers to streamline their operations and improve overall efficiency. Additionally, Opti Digital is committed to providing cookieless solutions, which are increasingly important in today's privacy-conscious digital landscape. This focus not only helps clients stay compliant with regulations but also positions them to adapt to future changes in the advertising ecosystem. Opti Digital's partnerships with notable publishers and organizations, such as Euronews, 1XL, Sporskeeda, Valnet, Verticalscope, Snack Media, Gizmodo, and the IAB’s Transparency and Consent Framework, further enhance its credibility and reach within the industry. As a recognized Google Certified Publishing Partner (GCPP) and a technology partner of Prebid, Opti Digital demonstrates its commitment to transparency and best practices in digital advertising. By prioritizing sustainability and reducing the carbon footprint of ads, Opti Digital also aligns with the growing demand for environmentally responsible advertising solutions. This multifaceted approach ensures that publishers can not only optimize their revenue but also contribute positively to the industry and the environment. **Average Rating:** 4.5/5.0 **Total Reviews:** 39 #### How Do G2 Users Rate Opti Digital? - **SSP Functionality :** 8.8/10 (Category avg: 8.3/10) - **Impression Targeting:** 8.7/10 (Category avg: 8.4/10) - **Ease of Admin:** 9.0/10 (Category avg: 8.4/10) - **Bid Reporting:** 7.4/10 (Category avg: 8.1/10) #### Who Is the Company Behind Opti Digital? - **Seller:** [Opti Digital](https://www.g2.com/sellers/opti-digital) - **Company Website:** www.optidigital.com - **Year Founded:** 2018 - **HQ Location:** Céret, FR - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=4961eeb7317156809d0d201ebcaff4c911db30c634510a24605e5f5d86227567&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Foptidigitalsas&secure%5Burl_type%5D=linkedin_company_website) 50 employees on LinkedIn® #### Who Uses This Product? - **Top Industries:** Marketing and Advertising, Online Media - **Company Size:** 57% Small, 40% Medium #### What Are Recent G2 Reviews of Opti Digital? **["Responsive Team, Global Reach, Real Results"](https://www.g2.com/survey_responses/opti-digital-review-13035441)** **Rating:** 4.5/5.0 stars _— Verified User in Media Production_ [Read full review](https://www.g2.com/survey_responses/opti-digital-review-13035441) **["Cutting-edge Technology and Responsive Team"](https://www.g2.com/survey_responses/opti-digital-review-12960556)** **Rating:** 5.0/5.0 stars _— Rodolphe V._ [Read full review](https://www.g2.com/survey_responses/opti-digital-review-12960556) ### [GaleForceMedia](https://www.g2.com/products/galeforcemedia/reviews) GaleForceMedia media buying software is a web-based software platform designed to streamline media processes. GaleForceMedia helps media buyers eliminate redundancies like duplicate field requirements, flexibly manage buys of different media types, accurately measure ad performance and effortlessly reconcile invoices. **Average Rating:** 4.6/5.0 **Total Reviews:** 20 #### How Do G2 Users Rate GaleForceMedia? - **SSP Functionality :** 9.1/10 (Category avg: 8.3/10) - **Impression Targeting:** 8.5/10 (Category avg: 8.4/10) - **Ease of Admin:** 9.3/10 (Category avg: 8.4/10) - **Bid Reporting:** 9.3/10 (Category avg: 8.1/10) #### Who Is the Company Behind GaleForceMedia? - **Seller:** [Galeforcedigital](https://www.g2.com/sellers/galeforcedigital) - **Year Founded:** 2014 - **HQ Location:** Palm Beach Gardens, FL - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=5a193fcf5c7d686907dc3c64b847fcff16333e5b1391d4c23183e972ab7a8723&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fgale-force-digital-technologies%2F&secure%5Burl_type%5D=linkedin_company_website) 11 employees on LinkedIn® #### Who Uses This Product? - **Top Industries:** Marketing and Advertising - **Company Size:** 65% Small, 20% Medium #### What Are Recent G2 Reviews of GaleForceMedia? **["GaleForceMedia changed how I buy & plan media. Can’t imagine going back to the way I worked before!"](https://www.g2.com/survey_responses/galeforcemedia-review-11513326)** **Rating:** 5.0/5.0 stars _— Orlando M._ [Read full review](https://www.g2.com/survey_responses/galeforcemedia-review-11513326) **["Streamlined Media Management, Almost Perfect"](https://www.g2.com/survey_responses/galeforcemedia-review-12180923)** **Rating:** 4.5/5.0 stars _— Satish R._ [Read full review](https://www.g2.com/survey_responses/galeforcemedia-review-12180923) ### [33Across](https://www.g2.com/products/33across/reviews) 33Across makes the programmatic advertising ecosystem work without cookies, across supply-side platforms, demand-side platforms, publishers, data companies, agencies, and everything in between. Leading global advertisers, platforms, and publishers rely on 33Across to move past cookies and reach consumers in a simple, fair, and transparent manner. **Average Rating:** 4.3/5.0 **Total Reviews:** 125 #### How Do G2 Users Rate 33Across? - **SSP Functionality :** 8.3/10 (Category avg: 8.3/10) - **Impression Targeting:** 8.3/10 (Category avg: 8.4/10) - **Ease of Admin:** 7.8/10 (Category avg: 8.4/10) - **Bid Reporting:** 8.1/10 (Category avg: 8.1/10) #### Who Is the Company Behind 33Across? - **Seller:** [33Across](https://www.g2.com/sellers/33across) - **Year Founded:** 2007 - **HQ Location:** NY, US - **Twitter:** @33Across 1,238 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=ee0ef2bbe2e7aabbd6c6788a51dcda713bb70fcdc9287cdd866497dbb11f6860&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F33across-inc.%2F&secure%5Burl_type%5D=linkedin_company_website) 48 employees on LinkedIn® #### Who Uses This Product? - **Top Industries:** Computer Software, Information Technology and Services - **Company Size:** 58% Small, 30% Medium #### What Do G2 Reviewers Say About 33Across? _AI-generated summary from verified user reviews_ ##### Pros - Users appreciate the **data-driven advertising solutions** of 33Across, enhancing outcomes while ensuring privacy and brand safety. - Users appreciate the **reliability** of 33Across, enabling confident and effective ad outcomes while ensuring privacy and brand safety. ##### Cons - Users feel that the **complexity** of 33Across may hinder novice users due to a steep learning curve and unclear documentation. - Users find the **difficult learning curve** of 33Across challenging, suggesting improved documentation for a smoother experience. - Users find **inefficient reporting** on 33Across cumbersome, especially due to a steep learning curve for novice users. #### What Are Recent G2 Reviews of 33Across? **["Effortlessly Connects Brands with Publishers for Ads"](https://www.g2.com/survey_responses/33across-review-12704383)** **Rating:** 5.0/5.0 stars _— Anandharaman P._ [Read full review](https://www.g2.com/survey_responses/33across-review-12704383) **["Effortless, Low-Work 33Across Experience"](https://www.g2.com/survey_responses/33across-review-12701361)** **Rating:** 5.0/5.0 stars _— Rachel V._ [Read full review](https://www.g2.com/survey_responses/33across-review-12701361) ### [PayTunes](https://www.g2.com/products/paytunes/reviews) Mobile advertisement platform. **Average Rating:** 4.1/5.0 **Total Reviews:** 35 #### How Do G2 Users Rate PayTunes? - **SSP Functionality :** 8.6/10 (Category avg: 8.3/10) - **Impression Targeting:** 8.2/10 (Category avg: 8.4/10) - **Ease of Admin:** 8.0/10 (Category avg: 8.4/10) - **Bid Reporting:** 8.2/10 (Category avg: 8.1/10) #### Who Is the Company Behind PayTunes? - **Seller:** [paytunes.in](https://www.g2.com/sellers/paytunes-in) - **Year Founded:** 2015 - **HQ Location:** New Delhi, IN - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=6ad77d31969fe6aa0b4b76fe5bd3a279b9a5cb4423f37df1ebae01e0a2b8849a&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fpaytunes%2F&secure%5Burl_type%5D=linkedin_company_website) 64 employees on LinkedIn® #### Who Uses This Product? - **Top Industries:** Marketing and Advertising - **Company Size:** 71% Small, 14% Large #### What Are Recent G2 Reviews of PayTunes? **["Excellent Digital audio Advertising Company"](https://www.g2.com/survey_responses/paytunes-review-6955766)** **Rating:** 5.0/5.0 stars _— Pallav M._ [Read full review](https://www.g2.com/survey_responses/paytunes-review-6955766) **["Paytunes Review"](https://www.g2.com/survey_responses/paytunes-review-7419111)** **Rating:** 4.0/5.0 stars _— Vikas R._ [Read full review](https://www.g2.com/survey_responses/paytunes-review-7419111) ### [Automatad](https://www.g2.com/products/automatad/reviews) Automatad is a digital media products co, that provides a suite of programmatic monetization solutions that drives efficiency and superior monetization at scale. Using our platform digital publishers can create, monetize and optimize for the best ad experience. **Average Rating:** 4.5/5.0 **Total Reviews:** 28 #### How Do G2 Users Rate Automatad? - **SSP Functionality :** 9.5/10 (Category avg: 8.3/10) - **Impression Targeting:** 9.2/10 (Category avg: 8.4/10) - **Ease of Admin:** 8.7/10 (Category avg: 8.4/10) - **Bid Reporting:** 9.5/10 (Category avg: 8.1/10) #### Who Is the Company Behind Automatad? - **Seller:** [Automatad](https://www.g2.com/sellers/automatad) - **Year Founded:** 2013 - **HQ Location:** New York, US - **Twitter:** @AutomatadX 293 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=1809a5383b65abc4d6a97b2e8a9c2d9f11647a609b8ee4d601b71df6600bdd0c&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fautomatad%2F&secure%5Burl_type%5D=linkedin_company_website) 7 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 57% Small, 33% Medium #### What Are Recent G2 Reviews of Automatad? **["Automatad is a fully featured Publishing And Subscriptions Software designed to serve SMEs, Startups"](https://www.g2.com/survey_responses/automatad-review-6969803)** **Rating:** 4.5/5.0 stars _— Verified User in Management Consulting_ [Read full review](https://www.g2.com/survey_responses/automatad-review-6969803) **["Comprehensive Solutions and User-Friendly Interface"](https://www.g2.com/survey_responses/automatad-review-9670502)** **Rating:** 5.0/5.0 stars _— Sai Prasanth T._ [Read full review](https://www.g2.com/survey_responses/automatad-review-9670502) Spotlight Categories [Influencer Marketing Platforms](https://www.g2.com/categories/influencer-marketing-platforms) [Operational Risk Management Software](https://www.g2.com/categories/operational-risk-management) [Customer Service Automation Software](https://www.g2.com/categories/customer-service-automation) [Anti Money Laundering Software](https://www.g2.com/categories/anti-money-laundering) [Virtual Data Room Software](https://www.g2.com/categories/virtual-data-room-vdr) Similar Categories - [Ad Networks](/categories/ad-networks) - [App Monetization Platforms](/categories/app-monetization-platforms) - [Audience Data Providers](/categories/audience-data-providers) - [Click Fraud](/categories/click-fraud) - [Connected TV (CTV) Advertising Platforms](/categories/connected-tv-ctv-advertising-platforms) - [Creative Management Platforms](/categories/creative-management-platforms) - [Cross-Channel Advertising](/categories/cross-channel-advertising) - [Data Management Platform (DMP)](/categories/data-management-platform-dmp) - [Demand Side Platform (DSP)](/categories/demand-side-platform-dsp) - [Digital Advertising Intelligence](/categories/digital-advertising-intelligence) - [Digital Audio Advertising](/categories/digital-audio-advertising) - [Display Advertising](/categories/display-advertising) - [Identity Resolution](/categories/identity-resolution) - [Media Sales Software](/categories/media-sales-software) - [Mobile Advertising](/categories/mobile-advertising) [Browse Supply Side Platform (SSP) Themes](/categories/supply-side-platform-ssp/themes)