Top IT Product Companies for API

Between them, the 26 IT product companies on this page cover IT services (15), web development (13), web design (13) and SaaS (9). They also list work in United States. 26 of them have written a profile you can read before you get in touch.

1. 1

   

   BPC Banking Technologies

   IT Services · Web Development · Web Design · Also in Switzerland

   BPC Banking Technologies supplies technology for banking and payments.

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   Why #1: In business 20+ years · Client numbers stated on its own website, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

2. 2

   AA

   aixigo AG

   Web Design · E-Commerce Development · UI/UX Design · Also in Germany

   aixigo AG is a German financial software company that builds a wealth management platform for banks and other financial institutions.

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   Why #2: Founded 1999 · Team of 120+, as stated on its own website, read 6 Oct 2026

   Not yet on record: client reviews, vetting.

3. 3

   

   Fiorano Software

   Web Development · IT Solution · Software Development · Also in United States of America

   Fiorano Software provides integration and API management software. Its platform links applications, devices and data across cloud, on-premises and hybrid environments.

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   Why #3: Founded 1995, as stated on its own website, read 6 Oct 2026

   Not yet on record: client reviews, vetting.

4. =4

   DB

   Dell Boomi

   IT Services · E-Commerce Development · Automation Engineer · Also in Germany

   Dell Boomi, known as Boomi, provides a single platform for integrating applications, APIs, data and AI agents.

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   Why #4 (shared): Client numbers stated on its own website, as stated on its own website, read 6 Oct 2026

   Not yet on record: client reviews, vetting.

5. =4

   

   Livespace

   E-Commerce Development · UI/UX Design · IT Solution · Also in United Kingdom

   Livespace is a cloud CRM platform designed around the sales process of business-to-business teams.

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   Why #4 (shared): Client numbers stated on its own website, as stated on its own website, read 6 Oct 2026

   Not yet on record: client reviews, vetting.

6. Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
7. –

   

   Infobip

   Social Media Marketing · IT Services · Web Development · Also in United Kingdom

   Infobip is a communications company that helps businesses reach and engage customers on many messaging channels.

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   On record: Team of 1,500+, as stated on its own website, read 6 Oct 2026

8. –

   

   Blendr.io

   IT Services · Web Development · Web Design · Also in Belgium

   Blendr.io is a data integration and automation service. It lets users link business applications and move data between them without writing code.

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9. –

   

   Dashbird

   IT Services · E-Commerce Development · IT Solution · Also in Estonia

   Dashbird is a monitoring and troubleshooting platform built for serverless applications.

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10. –

    D

    DASTrader

    IT Services · Web Development · Web Design · Also in United States of America

    DASTrader is the trading technology of DAS Inc, also known as Direct Access Software.

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11. –

    DV

    Data Virtuality

    IT Services · E-Commerce Development · Big Data · Also in United States of America

    Data Virtuality is a data integration and management platform. It lets companies reach data from many sources through one interface, centralise it and keep it governed.

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12. –

    D

    DocuSign

    IT Services · Web Development · Web Design · Also in United States of America

    DocuSign provides software for connecting and automating how organisations prepare, sign, act on and manage agreements.

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13. –

    

    Kontomatik

    E-Commerce Development · UI/UX Design · Software Development · Also in Poland

    Kontomatik is an open banking provider serving central and eastern Europe.

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14. –

    NI

    NGINX, Inc.

    IT Services · Web Development · Web Design · Also in United States of America

    NGINX is the company behind the widely used open-source web server project of the same name. It is now part of F5.

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15. –

    

    Oxynade by SecuTix

    Social Media Marketing · IT Services · Web Development · Also in Belgium

    Oxynade, part of SecuTix, is a software-as-a-service ticketing platform that runs in the cloud and is accessed through an API.

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16. –

    P

    Puca

    Mobile App Development · IT Services · Web Development · Also in Ireland

    Puca supplies business messaging technology, centred on SMS. Companies use it to contact customers and employees through a web console or by connecting their own systems.

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17. –

    S

    Scurri

    IT Services · Web Development · Web Design · Also in United Kingdom

    Scurri is a software company that connects ecommerce ordering, shipping and delivery.

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18. –

    

    SignNow

    Mobile App Development · Web Development · Web Design · Also in United States of America

    SignNow is an electronic signature platform, now branded airSlate SignNow, that lets organisations send, sign and manage documents online.

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19. –

    

    superface

    Artificial Intelligence - AI · IT Services · E-Commerce Development · Also in Czech Republic

    superface builds interface components for application programming interfaces.

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20. –

    T

    TeleSign

    IT Services · Web Development · Web Design · Also in United States of America

    TeleSign provides programmable APIs for verifying users and communicating with them across the global telecom network.

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21. –

    T

    Telestax

    IT Services · Web Development · Web Design · Also in United States of America

    Telestax provides communications platform software for service providers.

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22. Joined since the Q4 2026 edition. These listings arrived after the edition was ranked; they get a place at the next one (January 2027).
23. –

    R

    Reduck

    Artificial Intelligence - AI · Automation · Also in United States

    Reduck gives AI agents a library of deterministic browser automation scripts, served over MCP, so they can work with websites that offer no API instead of clicking through them…

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24. –

    CC

    Cognitive Credit

    Artificial Intelligence - AI · SaaS · FinTech · Also in London

    Cognitive Credit is a London-based credit data, analysis and AI platform for credit investors, covering more than 3,500 bond and loan issuers in the US, Europe and emerging…

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25. –

    K

    Kevel

    eCommerce · Also in Durham and North Carolina

    Kevel, formerly Adzerk, is a Durham, North Carolina company that supplies API-based advertising infrastructure so retailers, marketplaces and apps can run their own commerce media…

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26. –

    N

    n8n

    Artificial Intelligence - AI · DevOps · Also in Berlin

    Berlin-based n8n, founded in 2019 by Jan Oberhauser, makes a fair-code workflow and AI agent automation platform that can be self-hosted or used as a cloud service, with 500+…

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