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Revenue & Growth · 16 vendors ranked

Best Affiliate & Partner Marketing Software in 2026

The short answer

  1. #1 FirstPromoter: Romanian SaaS-focused tool, billed by affiliate revenue. Best for: SaaS businesses wanting affiliate and referral programmes combined in one tool.
  2. #2 Affilae: Bordeaux platform, fee charged only on validated sales. Best for: Brands wanting network-style recruitment support but with the variable cost tied to confirmed revenue.
  3. #3 Post Affiliate Pro: Slovak software since 2004, deep multi-level commission support. Best for: Advertisers or agencies wanting deep, self-configured commission logic on transparent pricing.

Visibility in this ranking can be paid for. Payment moves a vendor's position within the shortlist; it never adds a vendor, and it never changes a word of the review. The largest vendors in affiliate marketing software cannot hold places 1 to 3. Places 1 to 3 go to challengers, vendors outside the best-known brands in a category, wherever the category has them; the established names follow from place 4 in their ranked order. How it works: placement disclosure · editorial process.

Compared at a glance

#ToolBest forPricing modelHeadquarters
1FirstPromoter SaaS businesses wanting affiliate and referral programmes combined in one toolPublished tiers, billed by affiliate-generated revenueRomania
2Affilae Brands wanting network-style recruitment support but with the variable cost tied to confirmed revenuePublished tiers, subscription plus percentage on validated sales onlyFrance
3Post Affiliate Pro Advertisers or agencies wanting deep, self-configured commission logic on transparent pricingPublished tiers by tracking-request volumeSlovakia
4Tapfiliate Brands that already have or can recruit their own affiliates and want predictable flat pricingPublished tiers, flat subscription (no override)Netherlands
5PartnerStack B2B SaaS companies running co-sell, affiliate, influencer and referral partnerships togetherQuote onlyCanada
6Awin Advertisers wanting one of the widest existing publisher pools availablePublished tiers, network fee plus percentageGermany
7impact.com Enterprises running affiliate, influencer and referral programmes together at scalePublished tiers, subscription plus 2.5% transaction feeUnited States
8Tradedoubler Advertisers wanting deep Nordic and Southern European retail publisher relationshipsQuote only for the network; published tiers for Grow SaaSSweden
9TradeTracker Advertisers wanting a network with genuinely global office coverage and regional account teamsQuote onlyNetherlands
10Daisycon Dutch/Benelux-focused advertisers wanting an established mid-sized networkQuote only, advertiser-set commission ratesNetherlands
11Kwanko Advertisers running campaigns across several European markets plus Brazil from one vendorQuote onlyFrance
12Effinity Advertisers wanting agency-style account management layered on affiliate tracking technologyQuote only, performance-based per vendorFrance
13Everflow Performance marketers running many partners across several channels who need server-side trackingQuote only (volume-based)United States
14CJ Affiliate North American retail, travel and finance brands needing publishers introduced at scaleQuote onlyUnited States
15Rakuten Advertising Brands without an in-house affiliate manager that want the programme run for themQuote onlyJapan
16Webgains Brands wanting a B Corp-certified network with an established European publisher baseQuote onlyUnited Kingdom

The 16 tools, reviewed

#1 FirstPromoter

Romanian SaaS-focused tool, billed by affiliate revenue · Romania · firstpromoter.com

Billed by affiliate revenue, not seat count SaaS/subscription-business focus 3,000+ businesses (vendor claim)

FirstPromoter's pricing tracks what a programme actually earns rather than a flat seat or click count, and the vendor states an account is automatically moved to the next tier once revenue exceeds the current plan's limit so tracking never stops mid-month -- a genuinely different billing logic from every other tool in this category.

  • Pricing: Published tiers, billed by affiliate-generated revenue. Starter $49/month ($490/year): up to $5,000/month affiliate revenue, 1,000 affiliates, 3 campaigns. Free plan: free trial.
  • Best for: SaaS businesses wanting affiliate and referral programmes combined in one tool
  • Strengths: Combined affiliate and referral tracking; Automatic tier upgrades on revenue growth; One-click PayPal payouts (Business tier+).

Where it falls short

The contracting entity is Igil Webs SRL, registered in Cluj-Napoca, Romania (J32/956/2012) per its own terms, but no third-party security certification is stated.

Wrong for

A non-SaaS business, or one that wants a flat per-seat price rather than pricing tied to affiliate-generated revenue.

Visit FirstPromoter →

#2 Affilae

Bordeaux platform, fee charged only on validated sales · France · affilae.com

Fee applies only to validated sales, not gross clicks 600+ brands, 13,000+ affiliates (vendor claim) Bordeaux, France

Affilae is registered in Bordeaux (RCS Bordeaux) and built around a specific pricing promise -- "you only pay the variable on validated sales" -- distinguishing it from a pure percentage-override network where the fee applies to every tracked transaction regardless of whether it later validates.

  • Pricing: Published tiers, subscription plus percentage on validated sales only. Build €99/month + 2.5% per validated sale (1-month free trial, 3-month commitment). Free plan: free trial.
  • Best for: Brands wanting network-style recruitment support but with the variable cost tied to confirmed revenue
  • Strengths: Commission splitting and recurring commissions; AI-assisted partner matching (Match AI); Creator mobile app.

Where it falls short

Still an ongoing percentage fee on top of the monthly subscription, even though it's narrower than a gross-click override, and the Build tier's free trial carries a 3-month minimum commitment.

Wrong for

A team that wants zero percentage-based fees at any tier, since even the lower Grow-tier rate (2%) still applies to every validated sale.

Visit Affilae →

#3 Post Affiliate Pro

Slovak software since 2004, deep multi-level commission support · Slovakia · postaffiliatepro.com

Operating since 2004 Multi-level/MLM-style commission support Bratislava, Slovakia

Post Affiliate Pro is operated by Quality Unit, s.r.o., registered in Bratislava, Slovakia and established in 2004.

  • Pricing: Published tiers by tracking-request volume. Starter $89/month ($79/month annual): 10,000 tracking requests/month. Free plan: free trial.
  • Best for: Advertisers or agencies wanting deep, self-configured commission logic on transparent pricing
  • Strengths: Multi-level (MLM-style) commissions; Multiple merchant accounts (Network tier); Smartlinks.

Where it falls short

Pricing scales by raw tracking-request volume, a less intuitive metric to budget against than affiliate count or click volume, and Quality Unit also runs a Delaware-registered US subsidiary alongside its primary Slovak entity, worth noting for a buyer with a strict single-jurisdiction requirement.

Wrong for

A team that wants pricing tied to affiliate count or revenue rather than raw tracking-request volume.

Visit Post Affiliate Pro →

#4 Tapfiliate

Amsterdam software, published pricing, no revenue override · Netherlands · tapfiliate.com

No revenue override Published pricing from $89/month Amsterdam, Netherlands

Tapfiliate charges a flat, published monthly subscription rather than a percentage override on every sale, so a programme that scales does not get proportionally more expensive to run -- a clear structural difference from a network like Awin or TradeTracker further down this list.

  • Pricing: Published tiers, flat subscription (no override). Launch $89/month ($74/month annual): 1 program, 50 affiliates, 5,000 clicks/month, 7-day trial. Free plan: free trial.
  • Best for: Brands that already have or can recruit their own affiliates and want predictable flat pricing
  • Strengths: Self-run affiliate programme management; 30+ integrations incl. Shopify and Stripe; Real-time reporting.

Where it falls short

You recruit every affiliate yourself; Tapfiliate is software, not a publisher network.

Wrong for

A brand with no existing affiliates and no recruitment capacity, since Tapfiliate supplies no publisher pool of its own.

Visit Tapfiliate →

#5 PartnerStack

Toronto-founded PRM platform, now part of AppDirect · Canada · partnerstack.com

131,000+ active partners (vendor claim) Co-sell, affiliate, influencer and referral in one platform Now part of AppDirect

PartnerStack, founded by Bryn Jones and Luke Swanek and legally PartnerStack Inc. with disputes falling under Toronto, Ontario jurisdiction per its own Partner Terms of Service, states 600+ customer companies, 131,000+ active partners and $4M+ in daily sales through its network.

  • Pricing: Quote only. Not published on the vendor's public site; every plan is quoted after a sales conversation. Free plan: none.
  • Best for: B2B SaaS companies running co-sell, affiliate, influencer and referral partnerships together
  • Strengths: Partner relationship management (PRM); Co-sell and channel partnerships; Affiliate and influencer tracking.

Where it falls short

No pricing published anywhere on the public site.

Wrong for

A team that wants to see a price before a sales call, or one specifically avoiding a vendor mid-acquisition/restructuring.

Visit PartnerStack →

#6 Awin

Berlin network with 1M+ partners, ISO 27001 certified · Germany · awin.com

1M+ partners, ~30,000 advertisers (vendor claim) ISO/IEC 27001 certified (2022) Part of Axel Springer group

Awin is legally AWIN AG, registered in Berlin, Germany (Commercial Register AG Charlottenburg, HRB 75459 B), tracing to zanox (founded 2000) before its 2017 merger with Affiliate Window created the current brand.

  • Pricing: Published tiers, network fee plus percentage. Access £99+VAT/month plus a 3.5% per-transaction tracking fee (first month free, 3-month minimum term with 14-day cancellation notice). Free plan: free trial.
  • Best for: Advertisers wanting one of the widest existing publisher pools available
  • Strengths: Large existing publisher network; Tiered network access (Access/Accelerate/Advanced); API access and automation (Accelerate+).

Where it falls short

A managed network, not self-run software: advertisers pay a recurring per-transaction tracking fee (3.5% on Access, 2.5% on Accelerate, unpublished on the custom-priced Advanced tier) on top of the monthly platform fee, and the Access tier carries a 3-month minimum term with 14-day cancellation notice.

Wrong for

An advertiser that wants to own its affiliate relationships outright without an ongoing revenue-share, or one that wants the very lowest published entry price in this category.

Visit Awin →

#7 impact.com

Broad US partnership platform: affiliate, influencer, referral in one · United States · impact.com

1M+ active partnerships (vendor claim) 21 global offices, 1,000+ employees (vendor-stated) US-incorporated (Impact Tech, Inc.)

impact.com, legally Impact Tech, Inc., is one of the broadest partnership-management platforms in this category, covering affiliate, influencer, brand and referral partnerships in a single system with more than 1 million active partnerships stated across its customer base and 21 global offices.

  • Pricing: Published tiers, subscription plus 2.5% transaction fee. Starter from $30/month (self-serve sign-up, needs a Shopify, BigCommerce, WooCommerce, Adobe Commerce or Squarespace store), Essentials from $500/month, Pro from $2,500/month, Enterprise quoted by sales. Free plan: none.
  • Best for: Enterprises running affiliate, influencer and referral programmes together at scale
  • Strengths: Affiliate, influencer and brand-partnership management; Contract management for partnerships; Automated partner discovery.

Where it falls short

A 2.5% transaction fee sits on top of every tier's subscription and a one-time setup fee applies.

Wrong for

A small team without a Shopify, BigCommerce, WooCommerce, Adobe Commerce or Squarespace store, since only Starter is self-serve, or a brand that wants no percentage fee on partner-driven sales.

Visit impact.com →

#8 Tradedoubler

Stockholm network since 1999, co-founded by a Spotify co-founder · Sweden · tradedoubler.com

Founded 1999, one of the original affiliate networks Co-founded by Martin Lorentzon (Spotify co-founder) Now part of NYORDA Group

Tradedoubler was founded in Stockholm in 1999 by Felix Hagnö and Martin Lorentzon, who went on to co-found Spotify, and was listed on the Stockholm Stock Exchange from 2005 before recently restructuring as a subsidiary within NYORDA Group, a Stockholm-registered holding company bringing together several specialist digital-marketing businesses.

  • Pricing: Quote only for the network; published tiers for Grow SaaS. Network programmes are quoted per advertiser after a sales conversation. Free plan: free trial.
  • Best for: Advertisers wanting deep Nordic and Southern European retail publisher relationships
  • Strengths: Partner Marketing and Influencer Marketing programmes; Grow self-serve SaaS platform for SMBs (Start/Walk/Run tiers); 90+ country coverage.

Where it falls short

Pricing for the full managed network is not published, only for the smaller self-serve Grow platform, and the NYORDA Group restructuring means a buyer should confirm current corporate and billing structure directly rather than rely on historical descriptions of Tradedoubler as an independently listed company.

Wrong for

A buyer wanting a fully self-run tool with no network relationship, or one that wants published pricing for the managed network rather than only for the smaller Grow tiers.

Visit Tradedoubler →

#9 TradeTracker

Dutch network, 23 offices across 27 countries · Netherlands · tradetracker.com

23 offices across 27 countries (vendor claim) Dutch registration (KvK 39092006) Country-specific regional account teams

TradeTracker is legally TRADETRACKER INTERNATIONAL B.V., registered at De Strubbenweg 7 in Almere, Netherlands (KvK 39092006) per its own privacy policy, and states 23 offices spread across 27 countries on four continents -- a wider international office footprint than most other networks in this category.

  • Pricing: Quote only. Not published on the vendor's public site; quoted per advertiser on the standard network fee-plus-commission model. Free plan: none.
  • Best for: Advertisers wanting a network with genuinely global office coverage and regional account teams
  • Strengths: Existing publisher network; Country-specific regional offices; Centralised tracking and reporting.

Where it falls short

No pricing published anywhere on the public site, and no founding year or company-history detail is stated on the pages reviewed.

Wrong for

A team that wants to see a number before any sales conversation.

Visit TradeTracker →

#10 Daisycon

Dutch network since 2000, part of Linehub, 30,000+ publisher sites · Netherlands · daisycon.com

Operating since 2000 30,000+ active publisher websites (vendor claim) Part of Linehub marketing group

Daisycon, registered in Almere, Netherlands, has operated continuously since 2000 -- over 25 years -- and is now part of Linehub, a collective of specialised performance-marketing organisations. It states more than 30,000 active publisher websites in its network across international markets.

  • Pricing: Quote only, advertiser-set commission rates. Light, Advanced and Premium service packages offered; no fees published. Free plan: none.
  • Best for: Dutch/Benelux-focused advertisers wanting an established mid-sized network
  • Strengths: Affiliate Marketing, Lead Generation and App Services lines; MyDaisycon in-house tracking dashboard; Three managed-service tiers (Light/Advanced/Premium).

Where it falls short

No published pricing for any of its three service tiers, and a smaller stated publisher base than the largest EU network in this category (Awin, 1M+ partners).

Wrong for

An advertiser wanting the largest possible publisher reach, since Daisycon's stated network is considerably smaller than Awin's.

Visit Daisycon →

#11 Kwanko

French network with offices across Europe and Brazil · France · kwanko.com

Offices in 7+ countries incl. Brazil CPA-France member, IAB Europe vendor-verified GDPR and LGPD compliance documentation

Kwanko is registered in Bourg-la-Reine, a Paris suburb, and states regional offices in Lisbon, Madrid, Brussels, Warsaw, Hamburg and London plus São Paulo in Brazil -- a genuinely pan-European and cross-Atlantic office footprint run from one French legal entity, with explicit LGPD compliance documentation alongside GDPR for advertisers running EU/Brazil campaigns.

  • Pricing: Quote only. Not published on the vendor's public site. Free plan: none.
  • Best for: Advertisers running campaigns across several European markets plus Brazil from one vendor
  • Strengths: Multi-country performance-marketing network; Regional account management (Lisbon, Madrid, Brussels, Warsaw, Hamburg, London, São Paulo); GDPR and LGPD (Brazil) compliance documentation.

Where it falls short

No pricing published anywhere on the public site, so commission or CPA terms only surface in a sales conversation.

Wrong for

A team that wants published, self-serve pricing rather than a sales conversation.

Visit Kwanko →

#12 Effinity

Paris platform and agency, formerly Effiliation, 45,000+ partners · France · effinity.fr

45,000+ active partners (vendor claim) 900+ clients served (vendor claim) 25+ years of experience (formerly Effiliation)

Effinity is legally EFFINITY SAS, registered in Paris under RCS Paris 432 831 550, formerly branded Effiliation and stating more than 25 years of French affiliate-marketing experience.

  • Pricing: Quote only, performance-based per vendor. Stated as 100% performance-based by the vendor: only sales or leads validated by its platform are billed, with no hidden fees claimed. Free plan: none.
  • Best for: Advertisers wanting agency-style account management layered on affiliate tracking technology
  • Strengths: Proprietary tracking platform plus dedicated agency team; AI-driven partner matching and sourcing engine; B2C and B2B advertiser support.

Where it falls short

No published pricing at all, not even an indicative percentage range for its stated "100% performance-based" model.

Wrong for

A team wanting a software subscription with a published price.

Visit Effinity →

#13 Everflow

US server-side tracking platform, SOC 2 compliant · United States · everflow.io

Server-side tracking SOC 2 compliant 6-month minimum commitment

Everflow is a self-described bootstrapped company focused on server-side and multi-channel partner tracking, useful for a performance-marketing team running partners across several channels rather than a single affiliate programme. It states SOC 2 compliance, a named, checkable security standard.

  • Pricing: Quote only (volume-based). Not published; the vendor uses a "Request Personalized Pricing" form based on monthly affiliate payout volume. Free plan: none.
  • Best for: Performance marketers running many partners across several channels who need server-side tracking
  • Strengths: Server-side and multi-channel tracking; Fraud detection; Everflow Pay payment processing.

Where it falls short

Pricing is entirely form-gated and volume-based rather than published in any tier structure, and Everflow requires a 6-month minimum commitment, longer than the month-to-month options several competitors offer.

Wrong for

A team wanting a short-term or month-to-month commitment, or one that wants to see indicative pricing before a sales conversation.

Visit Everflow →

#14 CJ Affiliate

Founded 1998, one of the oldest networks, now part of Publicis Groupe · United States · cj.com

Founded 1998, Santa Barbara, California Part of Publicis Groupe Large North American retail/travel/finance publisher base

Commission Junction LLC, operating as CJ Affiliate, was founded in Santa Barbara, California in 1998, making it one of the oldest networks in this category alongside Tradedoubler. It now operates as part of Publicis Groupe, aligned with Publicis Media.

  • Pricing: Quote only. Not published on the vendor's public site; quoted after a sales conversation. Free plan: none.
  • Best for: North American retail, travel and finance brands needing publishers introduced at scale
  • Strengths: Large established affiliate network; Retail, travel and finance publisher relationships; Advanced reporting and analytics.

Where it falls short

No pricing published anywhere on the public site and no free trial stated, so every engagement starts with a sales conversation.

Wrong for

A buyer with a hard EU-only jurisdiction requirement, since CJ Affiliate is US-incorporated and now part of the France-headquartered but globally-structured Publicis Groupe.

Visit CJ Affiliate →

#15 Rakuten Advertising

Managed-service network, part of Japan's Rakuten Group · Japan · rakutenadvertising.com

Part of Rakuten Group, Inc. (Japan) Managed-service affiliate programme option Regional offices across 9+ countries

Rakuten Advertising operates as part of Rakuten Group, Inc., a major Japanese internet-services company spanning e-commerce, fintech, digital content and professional sports across 70+ businesses.

  • Pricing: Quote only. Not published on the vendor's public site; quoted after a sales conversation. Free plan: none.
  • Best for: Brands without an in-house affiliate manager that want the programme run for them
  • Strengths: Managed affiliate programme services; Publisher recruitment and account management; Cross-border/international campaign support.

Where it falls short

No pricing published anywhere on the public site.

Wrong for

A buyer wanting a fully self-serve product with published pricing rather than a managed-service sales relationship.

Visit Rakuten Advertising →

#16 Webgains

UK network, B Corp certified, part of ad pepper media group · United Kingdom · webgains.com

B Corp certified (2023) Part of ad pepper media International N.V. Bristol, UK headquarters

Webgains Limited, registered at The Quorum, Bond Street South, Bristol (Company Number 05353649), is a UK-headquartered affiliate network that has been B Corp certified since 2023 and operates as part of ad pepper media International N.V., a Netherlands-incorporated (N.V.) parent group -- a UK operating subsidiary under a Dutch-registered holding structure.

  • Pricing: Quote only. Not published on the vendor's public site; quoted per advertiser. Free plan: none.
  • Best for: Brands wanting a B Corp-certified network with an established European publisher base
  • Strengths: Existing affiliate publisher network; Network contracts and compliance documentation published; Modern Slavery Act statement published.

Where it falls short

No pricing published anywhere on the public site, and no free trial is stated.

Wrong for

A buyer with a hard EU-only (not merely European) jurisdiction requirement for the contracting entity, since Webgains Limited itself is incorporated in the UK.

Visit Webgains →

What this category is

Affiliate and partner marketing software connects an advertiser (a brand selling a product or service) with partners -- affiliates, publishers, influencers or referral partners -- who are paid a commission for sales or leads they generate. The software's job is tracking (attributing a sale to the right partner's link or code), reporting, and calculating and issuing the resulting commission payout.

How we ranked these

Five tests, applied to every product. The order is not the tests alone: places 1 to 3 go to challengers, vendors outside the best-known brands in a category, wherever the category has them, and the established names follow from place 4 in their ranked order.

  • Network model vs. self-run software vs. hybrid: Network model vs. self-run software vs. hybrid.
  • Published pricing is the exception, not the rule: Published pricing is the exception, not the rule.
  • Not every vendor here is the same size of company: Not every vendor here is the same size of company.
  • Where each contracting entity actually sits: Where each contracting entity actually sits.

What the data says about this market

Sixteen vendors are ranked here across a genuinely wide geographic spread: nine are EU-headquartered (Germany, Netherlands x2, Sweden, Slovakia, Romania, France x3), two are US-incorporated majors (impact.com, CJ Affiliate), one operates under a UK-incorporated entity within a Dutch parent group (Webgains), one sits under a Japanese conglomerate (Rakuten Advertising), one is Canadian by contracting jurisdiction (PartnerStack), and one US vendor's headquarters city could not be confirmed from public pages within this review's research budget (Everflow).

More in our report The Global Shift to ICT Services, on market data and in all industry reports.

How to choose

  1. Decide whether you're buying a publisher network or tracking software. If you have no existing affiliates and no capacity to recruit them, a network (Awin, TradeTracker, Daisycon, Tradedoubler, Kwanko, Effinity, CJ Affiliate, Rakuten Advertising or Webgains) buys you access to publishers who are already active, at the cost of an ongoing percentage fee.
  2. Price the percentage fee, not just the monthly number. A quote-only network's real cost is the percentage it takes on top of any platform fee, and that number rarely appears on the public pricing page.
  3. Check the parent company and contracting entity, not just the brand name. Six of the sixteen vendors here operate inside a larger corporate group, and at least two of those relationships changed within the last 18 months (PartnerStack into AppDirect, Tradedoubler into NYORDA Group).

Questions and answers

What is the best affiliate marketing software in 2026?

FirstPromoter ranks first of 16, best for saaS businesses wanting affiliate and referral programmes combined in one tool. Affilae is second (brands wanting network-style recruitment support but with the variable cost tied to confirmed revenue) and Post Affiliate Pro third (advertisers or agencies wanting deep, self-configured commission logic on transparent pricing). Places 1 to 3 go to challengers, vendors outside the best-known brands, wherever the category has them.

What's the difference between an affiliate network and self-run affiliate software?

A network -- Awin, TradeTracker, Daisycon, Tradedoubler, Kwanko, Effinity, CJ Affiliate, Rakuten Advertising or Webgains on this list -- brings an existing pool of publishers it has already recruited, and charges an ongoing percentage of tracked sales on top of a platform fee.

Which of these vendors publish real pricing rather than a sales quote?

Seven, one of them only in part: Tapfiliate (from $89/month), FirstPromoter (from $49/month), Post Affiliate Pro (from $89/month on a Starter tier listed as a limited offer, otherwise $139/month), Affilae (from EUR99/month plus a percentage on validated sales), Awin (from GBP99+VAT/month plus 2.5-3.5%), impact.com (Starter from $30/month plus a 2.5% transaction fee) and Tradedoubler, which publishes prices only for its self-serve Grow platform (EUR59-199/month).

Is there a free affiliate marketing tool on this list?

No vendor here offers a permanent free tier.

Which of these companies are the largest, most dominant players?

Four vendors are marked as major, dominant incumbents in this ranking: Awin (over a million partners, part of Axel Springer), impact.com (a broad US partnership platform with 1,000+ employees and 21 global offices), CJ Affiliate (founded 1998, now part of Publicis Groupe) and Rakuten Advertising (part of the Japanese Rakuten Group conglomerate).

Are any of these vendors part of a larger corporate group?

Yes, six. Awin is part of Axel Springer. CJ Affiliate is part of Publicis Groupe. Tradedoubler recently restructured into the Stockholm-registered NYORDA Group. Daisycon is part of Linehub. Webgains operates under the Netherlands-registered ad pepper media International N.V.

Which of these vendors are genuinely EU-headquartered?

Ten: Awin (Berlin, Germany), Tapfiliate (Amsterdam, Netherlands), TradeTracker (Almere, Netherlands), Daisycon (Almere, Netherlands), Tradedoubler (Stockholm, Sweden), Post Affiliate Pro (Bratislava, Slovakia), FirstPromoter (Romania), Affilae (Bordeaux, France), Kwanko (Bourg-la-Reine, France) and Effinity (Paris, France). impact.com and CJ Affiliate are US-incorporated.

Does Webgains count as an EU company since its parent is Dutch-registered?

Not for its own contracting entity. Webgains Limited, the entity a customer actually contracts with, is registered in Bristol, United Kingdom (Company Number 05353649).

Is there a fee to be listed in this ranking?

Visibility in this ranking can be paid for.

How often is this ranking updated?

Whenever a fact underneath it changes: a pricing update, an acquisition or restructuring (several vendors on this list changed corporate structure within the last two years), a certification gained or lost, or a product that stops being maintained.

Which vendor has the longest operating history?

Tradedoubler and CJ Affiliate are the oldest, both founded in the late 1990s (1999 and 1998 respectively), predating most other software categories entirely.

Which of these tools charges a fee only on validated sales rather than every tracked click?

Affilae publishes one.