Developer APIs Companies in United Kingdom (UK)

Developer apis companies build, develop, license, and operate software products, platforms, and developer tools for businesses, developers, and end users across industries. This page lists companies in the Developer APIs sector, with structured profile data to support discovery and comparison. The directory currently holds 8 companies in this sector. The largest share of listings is based in London. Related sectors on Enterprise League include Artificial Intelligence, Blockchain Technology, Developer Platform, Big Data and BI, Developer Tools, App Discovery, Assistive Technology.

8 companies

London top city

Developer APIs

List of Developer APIs companies in United Kingdom (UK)

8 companies

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Tatum

London, United Kingdom (UK)

At Tatum, we believe blockchain is the future, and developing apps on the blockchain should be accessible. Tatum is the fastest way to build, test and run blockchain apps. Supported on over 40+ blockchains, we make you turn your ideas into reality easy and quick.

Building Services Engineering

IT Services

Blockchain Technology

IT Consulting Services

Developer APIs

Developer Platform

PaaS

2017

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Qredo

London, United Kingdom (UK)

Qredo is a team of passionate, seasoned innovators in the crypto space. We've raised a war chest from some of the biggest names in crypto to build novel fintech infrastructure for crypto assets. Qredo is part of the new wave of innovations revolutionizing finance world. Our global telecoms infrastructure, Qredo Network, is a cross-chain protocol for asset managers and traders active in the digital asset markets. Using our institution-grade, layer 2 infrastructure, investors can hold all their crypto assets securely in one place, with unlocked access to a wide range of liquidity venues and DeFi yield opportunities. MainNet Version 1 is live today and servicing billions in AUM. Learn more or join the network for free at Qredo.com

Blockchain Technology

Software

Developer APIs

FinTech

Cryptocurrency

2018

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Huggg

Bristol, United Kingdom (UK)

From new starter surprises to anniversary rewards, and seasonal treats that recognise the modern, diverse workforce, gifts play an important role in building a great company culture. Huggg’s gifting platform enables you to choose, personalise and share the perfect gifts to recognise colleagues, boost happiness and enhance employee experience in just a few clicks. Removing the typical "what do I send?" and "where do I send it?" headaches, Huggg transforms a 3-month process into a 3-minute one - even making it possible to fully automate gift scheduling, so you never miss a birthday again. Offering high quality, best in class gifts for moments big and small, Huggg delivers them digitally in a way that feels just as good as giving and getting a real life gift. It’s gifting thoughtfully, made simple.

IT Services

E-Commerce Development

Mobile App Development

IT Consulting Services

Software

Developer APIs

B2B

2015

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42Crunch

London, United Kingdom (UK)

42Crunch provides API security testing and threat protection. We are the only API security platform to proactively test, fix and protect your APIs from development to runtime, meaning we protect your digital business. Our unique API security platform enables developers build and automate security into their API development pipeline and gives security teams full visibility and control of security policy enforcement throughout the API lifecycle. Deployed by leading enterprises across the globe, 42Crunch enables a seamless DevSecOps' experience that reduces governance costs and accelerates the rollout of secure APIs. Visit https://42crunch.com to learn more.

Computer Hardware

Cybersecurity

SaaS

Developer APIs

Network Security

2016

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Yapily

London, United Kingdom (UK)

Yapily is Europe’s leading open banking infrastructure platform solving a fundamental problem in financial services today: access. We securely connect our customers to thousands of banks across Europe, allowing them to access financial data and initiate payments. Yapily’s customers range from disruptive fintechs to industry leaders operating in a number of verticals. To date, we've raised $69.4 million in funding, and employ over 200 people worldwide as we continue to scale across Europe.

Accounting

IT Services

IT Consulting Services

Software

Financial Services

Developer APIs

Data Integration

2017

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The Matrix org Foundation

London, United Kingdom (UK)

Matrix is an open protocol for decentralised, secure communications. The Matrix.org Foundation exists to act as a neutral custodian for Matrix and to nurture it as efficiently as possible as a single unfragmented standard, for the greater benefit of the whole ecosystem, not benefiting or privileging any single player or subset of players. We believe: • People should have full control over their own communication. • People should not be locked into centralised communication silos, but instead be free to pick who they choose to host their communication without limiting who they can reach. • The ability to converse securely and privately is a basic human right. • Communication should be available to everyone as a free and open, unencumbered, standard and global network.

Telecommunications

IoT Development

Software

Developer APIs

VoIP

Open Source

2014

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New Forest Digital

Southampton, United Kingdom (UK)

Integration. Websites. Content. Search. Expert guidance and effective digital strategies tailored to realise your vision.

Developer APIs

Digital Marketing

Web Development

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CyberVisir Solutions Ltd

London, United Kingdom (UK)

LeakData.io, operated by CyberVisir Solutions Ltd., helps authorized users check whether email addresses, usernames, phone numbers, or domains appear in indexed breach data. Guest access is limited; monitoring, API, webhook, and SIEM capabilities depend on plan. Exposure matches require independent corroboration.

Cybersecurity

SaaS

Developer APIs

Intrusion Detection

Network Security

View Profile

List of Developer APIs companies in United Kingdom (UK)
Company Name	Location	Category	Employees	Website
Tatum	London, United Kingdom (UK)	Real Estate +2 Real Estate, Information Technology, Business Services	50-100	https://tatum.io/
Qredo	London, United Kingdom (UK)	Information Technology +2 Information Technology, Finance and Banking, Payments	150-200	https://www.qredo.com/
Huggg	Bristol, United Kingdom (UK)	Information Technology +2 Information Technology, Business Services, Other	30-50	https://www.huggg.me/
42Crunch	London, United Kingdom (UK)	Electronics +1 Electronics, Information Technology	30-50	https://42crunch.com/
Yapily	London, United Kingdom (UK)	Finance and Banking +2 Finance and Banking, Information Technology, Business Services	100-150	https://www.yapily.com/?utm_source=enterpriseleague.com
The Matrix org Foundation	London, United Kingdom (UK)	Media, Publishing and Communication +1 Media, Publishing and Communication, Information Technology	10-20	https://www.matrix.org/
New Forest Digital	Southampton, United Kingdom (UK)	Information Technology +1 Information Technology, Sales and Marketing	2-10	https://newforest.digital
C CyberVisir Solutions Ltd	London, United Kingdom (UK)	Information Technology Information Technology		https://leakdata.io

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Updated 23 October 2026

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