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View Mainstream, Inc's top competitors like Adform, AppNexus, and Bidtellect.

FreeWheel
FreeWheel’s TV and video advertising technology is built for today’s ever-evolving multiscreen ecosystem. Whether you’re a buyer or a seller, we offer all the tools, data, and insights you need to drive results. FreeWheel’s platform makes TV and video advertising work.
New York, New York, US
Private
$677.4M Revenue
http://www.freewheel.com
1.4K Employees
InMobi Advertising
InMobi Advertising is a leading global programmatic platform specializing in mobile-first solutions that drive customer growth. By connecting brands, agencies, and publishers to their consumers, InMobi Advertising provides the data, intelligence and scale to deliver high-performance ad experiences across omni-channel environments.
IN
Private
$70.8M Revenue
https://advertising.inmobi.com
1.5K Employees
Adform
Adform is the most powerful and safe media buying platform in the world. With a 20+ year history of delivering service excellence and forward-looking technology, Adform enables major brands, agencies and publishers, to create, buy, and sell digital advertising globally. Having pushed the boundaries through augmented intelligence and an industry-leading identity solution, Adform has consistently changed the game for digital advertisers. Accreditation & Certifications: MRC, EDAA Trust Seal Certified, TAG Certified Against Fraud, TAG Certified Against Malware, IAB Gold Standard, JIC|WEBS Brand Safety Certificate Industry Recognition: Gartner Voice of the Customer Rated Customers’ Choice 2022 Positioned as a Leader in Gartner Magic Quadrant for Ad Tech (2018, 2019, 2020, 2021) Top 100 Financial Times Diversity Leaders List 2021 Awards: European Video Awards: Best Buy-Side Technology (2025) Digital Communication Awards: Innovation of the Year (2024) Digiday: Winner of Best Sustainable Platform (2024) AdExchanger: Programmatic Power Player (2023 and 2024) The Drum Awards: Winner Digital Advertising Automotive Category (2023) The Drum Awards: Digital Advertising 2022 ‘Best response to change’ with ID Fusion (2022) iF Design Award (2022) - Award for UX for Adform FLOW Red Dot Award for User Experience (2021) The Drum Digital Advertising Awards 2019 – Mobile Category (Award) IAB Mixx Awards 2019 - Programmatic Advertising (Silver) Top IT Employer 2018 CV-Online Danish Digital Awards 2018 (Gold, Data & Marketing Automation) Danish Digital Awards 2018 (Bronze, E-Commerce B2c + B2B) Danish Digital Awards 2018 (Innovation, Established Brands) Lithuania's Best Employer (2012, 2014, 2016) EY Entrepreneur Of The Year 2015 (Denmark) Gazelle Award (2009, 2010, 2011, 2015) INMA.ORG - New Concept to Incubate Products or Ideas 2017 (Finalist) MediaPrisen 2014: Mediekreativitet (Mediaprisen Vinner Av Gull) White Bull Longhorn Award (2011)
DK
Private
$238M Revenue
https://www.adform.com
866 Employees
G2 Leader Summer 2026 G2 Best Est ROI Mid-Market Summer 2026 G2 Easiest Admin Mid-Market Summer 2026 G2 Most Implementable Summer 2026 G2 Best Results Mid-Market Summer 2026 G2 Lead Capture Mid-Market Summer 2026 Inc Fastest Growing Private Companies 2026 Inc Best Workplace 2026
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