F
Companies using Four
1,833 sites detectedUpdated October 2026
Showing 25 of 1,833 sites detectedScroll sideways for every column
| # | Company | Industry | Location | First seen | Also uses | Signals | Contacts |
|---|---|---|---|---|---|---|---|
| 1 | Professional ServicesWeb Design AgencyB2B · Services | Colchester, GB | Apr 2026signature | D  B  M  | – | ||
| 2 | Professional ServicesElectrical Engineering ServicesB2B · Services | – | Apr 2026signature | G  C  M | – | – | |
| 3 | Healthcare & Life SciencesReproductive Health ServicesB2C · Services | – | Apr 2026signature | D C  M | – | – | |
| 4 | Professional ServicesBusiness ConsultingB2B and B2C · Services | – | Apr 2026signature | F  A  S | – | ||
| 5 | Education & LearningInternship & Career PlatformB2C · Marketplace | – | Apr 2026signature | F A  C  | – | – | |
| 6 | Hospitality & TravelRestaurant & BarB2C · Ecommerce | – | Apr 2026signature | S  S  D | – | ||
| 7 | Hospitality & TravelCoffee ShopB2C | – | Apr 2026signature | S S G | – | – | |
| 8 | Media & ContentGamingB2C | – | Apr 2026signature | M A  E  | – | ||
| 9 | Hospitality & TravelHiking & Outdoor TourismB2C | – | Apr 2026signature | C C M | – | – | |
| 10 | Marketing & Sales TechMedia Advertising PlatformB2B · Marketplace | – | Apr 2026signature | A E | – | – | |
| 11 | Marketing & Sales TechAffiliate MarketingB2B | – | Apr 2026signature | M  T  M | API docs | ||
| 12 | Hospitality & TravelFood & BeverageB2C | – | Apr 2026signature | S  J  D  | – | ||
| 13 | Professional ServicesSustainability ConsultingB2B · Services | – | Apr 2026signature | S S C | – | ||
| 14 | E-commerce & RetailGaming Equipment & MachinesB2B · Ecommerce | – | Apr 2026signature | M A E | – | ||
| 15 | Hospitality & TravelEvent CateringB2B and B2C · Services | – | Apr 2026signature | F  M A | – | ||
| 16 | Media & ContentLegal NewsB2B and B2C | – | Apr 2026signature | D Y  C | – | ||
| 17 | Media & ContentLegal News & AnalysisB2B · SaaS | – | Apr 2026signature | F D M | Pricing page | ||
| 18 | Marketing & Sales TechAffiliate MarketingB2B and B2C | – | Apr 2026signature | F M  G  | HiringFree trial | ||
| 19 | E-commerce & RetailMerchandise & GiftsB2C · Ecommerce | – | Apr 2026signature | S M A | Pricing page | – | |
| 20 | Hospitality & TravelHotelsB2C | – | Apr 2026signature | G M A | – | – | |
| 21 | Marketing & Sales TechAudience MeasurementB2B · SaaS | – | Apr 2026signature | C  A E | – | ||
| 22 | Professional ServicesCommercial Real EstateB2B and B2C · Services | US | Apr 2026signature | A E E | Hiring | ||
| 23 | Marketing & Sales TechPR and CommunicationsB2B · SaaS | – | Apr 2026signature | F M A | – | ||
| 24 | Marketing & Sales TechAudience Measurement AnalyticsB2B · SaaS | – | Apr 2026signature | C A E | – | ||
| 25 | Marketing & Sales TechAudience MeasurementB2B and B2C · SaaS | – | Apr 2026signature | D C A | – |
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