European Programmatic Advertising Platforms

#1 Adnuntius

Oslo, Norway Quoted per order form. Standard support is EUR 100 per started hour and professional services EUR 175 per hour when an order form is silent (rates page, checked 31 October 2026) Demo on request

Best for: Agencies, retailers and publishers wanting a direct supply path plus an ad server of their own

• Operating company. Adnuntius
• Jurisdiction. EEA, not EU (Norway)
• Where the data sits. Not stated on the pages reviewed; data residency is described as under the customer's control
• Source code. Closed source
• Replaces. The Trade Desk, Google Ad Manager, Amazon DSP

Adnuntius is an Oslo ad technology company that sells three connected parts: a marketplace where advertisers buy straight from publisher and retail media inventory, an API-first ad server, and a DMP with CRM matching. The platform page lists display, native, video, streaming, DOOH and sponsored products, and a Prebid wrapper lets it run beside other SSPs and Google Ad Manager in one auction.

The company has offices in Oslo, Stockholm and Copenhagen, an engineering group in Australia, and reports more than 1,000 customers. Its general terms choose Norwegian law and the courts of Oslo, and the contract documents and service rates sit on public pages. Marketplace fees are not shown, and the efficiency figures, such as 85 percent of spend reaching working media, are the vendor's own claims.

Standout feature. Adnuntius pairs a buyer marketplace with the same ad server that retailers use to build their own retail media networks.

#2 BidTheatre

Stockholm, Sweden Not published; the vendor says all costs and fees are outlined in detail inside the platform Demo on request

Best for: Media agencies in the Nordics and wider Europe wanting an in-house trading desk

• Operating company. Vitec BidTheatre AB
• Jurisdiction. EU (Sweden)
• Where the data sits. Not stated on the pages reviewed
• Source code. Closed source
• Replaces. The Trade Desk, Google Display & Video 360

BidTheatre is a Stockholm self-serve demand-side platform run by Vitec BidTheatre AB, which the vendor says has operated since 2012. Buyers can trade display, video, audio and native across desktop, mobile, connected TV and out-of-home through open and private marketplaces, with supply partners connecting through OpenRTB only. An estimation tool returns expected impressions, price and click-through rates before launch.

The vendor positions itself as independent and says it will not own media, and it states that all costs and fees are outlined inside the platform. The FAQ names its limits: no paid search, and no Meta or TikTok buying. It reports 200+ clients, supports TCF 2.2, and answers CRM data questions case by case, with no list price on the site.

Standout feature. BidTheatre bases its pitch on refusing to own media and on showing every fee inside the buying interface.

#3 Active Agent

Freiburg im Breisgau, Germany Founded 2013 Not published; contact the vendor Demo on request

Best for: German-speaking agencies adding TV, cinema and DOOH to display buying

• Operating company. Virtual Minds GmbH
• Jurisdiction. EU (Germany)
• Where the data sits. Not stated on the pages reviewed; the vendor cites German and European data protection rules
• Source code. Closed source
• Replaces. The Trade Desk, Amazon DSP

Active Agent is the demand-side platform of Virtual Minds GmbH in Freiburg im Breisgau, registered at the local court under HRB 724928. Beyond display, native and video it lists programmatic cinema, digital audio and radio, linear and programmatic TV, and DOOH booking, with exclusive pre-bid integrations named for Otto PNTA and Weischer TRACE.

The company history says Active Agent AG was founded in 2013, that subsidiaries merged into Virtual Minds GmbH in 2021, and that ProSiebenSat.1 invested in 2015 and later took the company over fully. Sister products are the Adition ad server, The Adex data platform and the Yieldlab SSP. Pricing is on request, access starts with a contact form, and the product pages are mainly written for Germany.

Standout feature. Active Agent books programmatic TV, cinema and radio from the same interface that buys display.

#4 Adform

Copenhagen, Denmark Not published; contact the vendor Demo on request

Best for: Agencies and large advertisers wanting buying, serving and measurement in one stack

• Operating company. Adform
• Jurisdiction. EU (Denmark)
• Where the data sits. Not stated on the pages reviewed
• Source code. Closed source
• Replaces. The Trade Desk, Google Display & Video 360

Adform is a Copenhagen media buying platform with its head office on Rosenborggade. FLOW unites the DSP, ad server and DMP and covers display, video, CTV, mobile, audio, DOOH and retail media, and the vendor says it serves clients in more than 25 markets. The partner ecosystem page lists inventory, data, contextual and measurement partners.

The memberships page lists MRC accreditation for display and video served impressions and viewability, TAG Platinum, the IAB UK Gold Standard, and TAG brand safety and transparency programmes. ID Fusion links the platform to more than 40 identifiers. Pricing is on request, the contracting entity name is not shown on the pages reviewed, and a New York office is listed.

Standout feature. Adform is the one platform here that lists MRC accreditation and a TAG Platinum status for its buying stack on a public page.

#5 RTB House

Warsaw, Poland Not published; campaigns are arranged with the vendor Demo on request

Best for: E-commerce and app advertisers that put budget into lower-funnel results

• Operating company. RTB House S.A.
• Jurisdiction. EU (Poland)
• Where the data sits. Not stated on the pages reviewed
• Source code. Closed source
• Replaces. The Trade Desk, Criteo, Google Display & Video 360

RTB House is a performance company in Warsaw whose privacy centre names RTB House S.A. at ul. Zlota 61/101 as a data controller, with subsidiaries in France, Germany, the UK, the Netherlands, Spain, Italy and other countries. It applies deep learning to first-party signals for retargeting, acquisition, quality traffic and demand generation on web and app.

The homepage says first-party data is activated without being pooled or sold. The about page reports ISO/IEC 27001:2022 for all entities that process client data, IAB Tech Lab membership, Prebid certified partner status and a seat on the NAI board. Results of 57 percent added scale at set ROAS belong to the vendor, and a US subsidiary, RTB House Inc., means the order form decides who contracts.

Standout feature. RTB House builds its bidding on deep learning models and uses them for lower-funnel results only.

#6 Displayce

Bordeaux, France Founded 2014 Not published; book a demo Demo on request

Best for: Brands and agencies buying street, mall, airport and transit screens programmatically

• Operating company. Displayce SAS
• Jurisdiction. EU (France)
• Where the data sits. Not stated on the pages reviewed
• Source code. Closed source
• Replaces. The Trade Desk (DOOH), Hivestack, Vistar Media

Displayce is a Bordeaux company that offers a DSP for advertisers and a DMP for media owners, both for programmatic digital out-of-home. The DSP page claims real-time trading on 1.8M screens from 660 media owners in more than 80 countries. CampaignAI converts a brief into a contextual plan and Pulse raises delivery on prime-time screens near large events.

The privacy policy names Displayce SAS, and the about page says the company started in 2014, raised EUR 850K in 2016 and has had JCDecaux as majority shareholder since 2022. It reports nine offices. Dynamic creative can follow weather, traffic, pollution, price or stock, and measurement offers brand lift studies and drive-to-store analytics. Pricing is not published and a demo comes first.

Standout feature. Displayce treats out-of-home as its only product and trades it on the same bid-based logic as online display.

#7 Equativ

Paris, France Not published; request a demo Demo on request

Best for: Advertisers and agencies wanting curated deals and CTV reach from a partner that also sells supply

• Operating company. Equativ
• Jurisdiction. EU (France)
• Where the data sits. Not stated on the pages reviewed
• Source code. Closed source
• Replaces. The Trade Desk curated deals, Amazon DSP

Equativ is a Paris company that grew out of Smart AdServer inside a premium publisher. Its legal notice gives a share capital of EUR 632,095 and registration at the Paris trade register under RCS 487 613 481, at 44-48 Rue de Chateaudun. Maestro is its advertiser platform, described as AI-powered with embedded agents.

Curation is the main lever: buyers combine their own data with SSP supply to make named deal packages, and the vendor claims over 500 self-serve clients and 30K deals created. CTV and retail media sit in the same account. Because Equativ also runs the SSP and the ad server, it works on both sides of the market, and the New York office and Sharethrough name are on its site.

Standout feature. Equativ lets a buyer curate deal packages on top of supply from an SSP that the same company operates.

#8 Azerion

Netherlands (HQ city not confirmed), Netherlands Founded 2013 Not published; contact the vendor Demo on request

Best for: Advertisers wanting gaming, content and omnichannel DSP buying from one Dutch group

• Operating company. Azerion Group N.V.
• Jurisdiction. EU (Netherlands)
• Where the data sits. Not stated on the pages reviewed
• Source code. Closed source
• Replaces. The Trade Desk, Google Display & Video 360

Azerion Group N.V. is a Dutch digital advertising and gaming group that sells the Hawk DSP. The Hawk site lists DOOH, desktop, mobile, tablet, TV and in-game screens, in display, video and audio formats, and splits the product into planning tools, activation and a research layer. The Azerion Identity Graph combines data sources for targeting.

Founded in 2013, the group also distributes games and sells owned and third-party content inventory, so some of the supply a buyer reaches belongs to Azerion. The publisher seller terms cite Dutch law and the courts of Amsterdam, buyer terms were not read, the Hawk site footer shows 2023, and the headquarters city is not stated.

Standout feature. Azerion is the group here that combines a DSP with its own game distribution and in-game ad inventory.

#9 Criteo

Paris, France Not published; contact sales Demo on request

Best for: Retailers and brands wanting performance retargeting plus commerce data from one vendor

• Operating company. Criteo (contracting entity varies by audience location)
• Jurisdiction. EU (France)
• Where the data sits. Not stated on the pages reviewed
• Source code. Closed source
• Replaces. The Trade Desk, Google Display & Video 360, Amazon DSP

Criteo is a Paris commerce media company, with its Paris office at 32 Rue Blanche. A May 2025 contracting entities document sets the contract party by audience location: Criteo SAS under French law for French and Swiss audiences, Criteo B.V. for the Netherlands and Belgium, Criteo GmbH for Germany and Austria, Criteo Ltd for the UK, and Criteo Corp. under New York law for US audiences.

The products centre on commerce: dynamic retargeting with product ads, acquisition and retention, predictive bidding on the predicted value of each user, the Shopper Graph, and retail media through Commerce Max, Commerce Grid and Commerce Yield. The company page claims 3,500+ employees, 26 offices and 17,000+ customers, all vendor figures. Pricing needs a conversation with sales.

Standout feature. Criteo changes the legal entity and law in the contract according to the country of the audience selected.

#10 Seedtag

Madrid, Spain Founded 2014 Not published; talk to an expert Demo on request

Best for: Brands choosing context-based targeting over user-level tracking

• Operating company. Seedtag Advertising, S.L.
• Jurisdiction. EU (Spain)
• Where the data sits. Not stated on the pages reviewed
• Source code. Closed source
• Replaces. The Trade Desk contextual buying, Google Display & Video 360

Seedtag is a Madrid contextual advertising company that, according to its about page, Jorge Poyatos and Albert Nieto founded in 2014. The legal notice names Seedtag Advertising, S.L. in the Madrid Mercantile Register. It reports 700+ employees, 16 markets, 15 offices and a network of more than 30,000 publishers.

Its Liz AI reads the context around an ad slot, and campaigns run on display, online video and connected TV, with a creative studio and a curation platform. The homepage claims 3.5 times higher neural engagement than non-contextual ads, which is the vendor's research. Buying is managed through a talk-to-an-expert flow, no price is published, and the contracting entity for campaigns outside Europe is not stated.

Standout feature. Seedtag treats the meaning of the surrounding page, not the profile of the reader, as the core targeting signal.

#11 Adcash

Tallinn, Estonia Founded 2007 Campaigns from as little as EUR/USD 100 according to the advertiser page (checked 31 October 2026); format-level CPMs not published Demo on request

Best for: Performance and affiliate advertisers buying volume traffic in self-serve

• Operating company. Adcash OÜ
• Jurisdiction. EU (Estonia)
• Where the data sits. Not stated on the pages reviewed
• Source code. Closed source
• Replaces. The Trade Desk (performance traffic), PropellerAds, Google Display & Video 360

Adcash is a Tallinn self-serve platform run by Adcash OÜ, registry number 12141869, with its seat at Ahtri 6. The about page says it began in 2007 as an affiliate platform, turned into an advertising platform in 2016, adopted the Performance DSP+ label in 2018 and added video ads and auto rules in 2025.

Advertisers choose among pop-under, push, in-page push, interstitial, display and video traffic from 200+ supply partners, with smart bidding, CPA target bidding and a Voluum Automizer integration. The advertiser page names campaigns from as little as EUR/USD 100. The verticals it lists include iGaming and adult, format CPMs are not published, and the USD 35.88M fraud saving it reports is its own figure.

Standout feature. Adcash is the platform here where an advertiser can start a campaign alone from EUR/USD 100.

#12 Weborama

Levallois-Perret, France Founded 1998 Not published; contact the vendor Demo on request

Best for: Advertisers wanting intent-based audiences and an activation partner from the same vendor

• Operating company. Weborama
• Jurisdiction. EU (France)
• Where the data sits. Vendor states data is built on the open web and processed in Europe
• Source code. Closed source
• Replaces. The Trade Desk audience data

Weborama is a French data company at 36 rue Raspail in Levallois-Perret, registered at the RCS of Nanterre under number 418663894, and says it has existed since its creation in Paris in 1998. Webo Intent converts behavioural, contextual and semantic signals into scored audiences, with the page stating 200M+ profiles, 10B+ signals and 500M+ URLs.

A hybrid DMP/CDP connects first-party and open-web data, persona digitalization and CRM enrichment add detail to customer files, and activation runs through display, video, CTV, audio and in-app with trading expertise attached. The vendor says processing is in Europe. No self-serve seat is described, brand lift of +25 percent is measured by Weborama itself, and the about page notes a presence in the United States.

Standout feature. Weborama sells a dynamic intent score on a large profile base and activates it through a managed team.