September 27, 2021
Developer APIs is big business in the UK. We have selected the top 77 Developer APIs companies across the size spectrum to showcase. These startups and companies are all taking different approaches to innovating the Developer APIs industry, that diversity of innovation is what makes the UK so great.
We selected these startups and companies for exceptional performance in one of these categories:
Innovation
Growth
Management
Societal impact
We have profiled the top 77 Developer APIs startups, companies and firms in the UK. This list is in no particular order, all of the companies showcased here are exceptional companies, well worth following.
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TrueLayer is a fintech platform utilized to build financial apps that connect to bank data, verify accounts, and access transactions.
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Railsbank is an open banking API and platform that gives regulated and un-regulated companies access to global banking.
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Tyk is an open source API gateway and management platform that provides on-premises, cloud/multi-cloud, and enterprise.
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Codat is an API platform that provides real-time connectivity to the financial software used by small businesses.
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Tickitto is a travel technology company that develops a ticket assistant platform to help people book tickets.
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Bud is a financial network combining APIs & data to create a new species of connected experiences.
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Duffel provides an online platform that allows users to search, book, and manage flights from multiple airlines.
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42Crunch is an API Security platform, addressing the development, testing, and deployment security requirements of API infrastructure.
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Fidel is a payments API platform for developers, providing tools to build powerful, real-time products on top of payment cards.
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Impala's API connects room sellers and hotels, instantly. We empower you to build, innovate and sell.
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Amity powers in-app social experiences, helping developers to easily add pre-built social features to any app with a few lines of code.
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WealthKernel is a supplier of infrastructure for companies looking to offer digital investment services.
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Pusher Ltd. provides a hosted API service for adding real-time bi-directional.
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tru.ID is reinventing mobile authentication for today's world through a modern developer platform.
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Open Source, Interoperable IP Comms
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ARWAY is a spatial mapping platform critical to building the Metaverse.
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Synthetic data for quicker and privacy compliant development and testing
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The power of data without the risk. Metomic detects & protects sensitive data across all your internal databases & cloud applications.
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API marketplace with blockchain payments for pay as you go for API usage, Ethereum clients, infrastructure and consulting.
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TouchNote helps you send thoughtful cards and prints to loved ones, right from your mobile, tablet or desktop.
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Hutoma is a building emotionally evolved AI interfaces for connected devices, app and web powered by Deep Learning.
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Validates the authenticity of photos & videos and performs image analysis to automate processes with a focus in the insurance sector.
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Accelerating deployment of renewable energy assets with data and intelligence
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ComplyCube is a market-leading platform for automating Identity Verification (IDV), Anti-Money Laundering (AML) and Know Your Customer (KYC)
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MindLink provides business critical collaboration enabled through Enterprise Chat.
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KITE is the most advanced software platform for powering a global print-on-demand internet business.
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ParcelBright provides small e-commerce stores with package deliver services.
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Validate API ( for single realtime payment validation) and Validate Data Manager API (for bulk payment file validation )
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Imin is a technology firm that makes physical activity searchable & bookable by using open data in the health and fitness sector.
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Over The Top payment platform connecting businesses to the latest real-time payments innovations without changing bank.
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Therapy-Box are developers specialising in healthcare and education.
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The Waze for personal safety navigation.
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CRUZEO is a platform which lets users build at-scale decentralized marketplaces; with just a few clicks, no code necessary.
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Careerjet is a semantic analysis technology-based vertical search engine connecting various job vacancy listings globally.
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Hostarium's unique platform provides scalable, affordable hosting solutions using the power of Google Cloud
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Pole Star is a SaaS software solutions and APIs development company.
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Email marketing service provider
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Klappo is a semantic platform for ingredients.
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International smart payment platform. Online acquiring with global benefits.
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5ire is a Fifth-generation Sustainable Blockchain with a mission to bring a shift from for-profit to a for-benefit economy.
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Datapane is a Python framework for developing data science documents for companies, clients, or communities.
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A Cloud, SaaS Secure Video, Audio meeting and Events business using our own proprietary technology.
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KashFlow Software is a simple but powerful, online accounting package developed with small business owners in mind.
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Security to communicate freely
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A connected platform to automate Anti-Money Laundering (AML) and Know Your Customer (KYC) Processes — API & Web Portal
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NStack is a platform which connects data sources, predictive models, and internal tools together.
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Super-fast hosted API mocking (Service Virtualization), with a QA-friendly UI
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Consumer and Workforce Identity as a Service, Pirean simplifies how customer's deliver IAM capabilities for enterprise web and mobile apps.
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Magora Systems is a team of result-driven people, who love what they do. We like to wow people with our fresh and inspiring products.
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Qwerly aggregates social media data from various sources and makes it available via an API.
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What it is Ingenia is a text analytics API + web app that tags your content automatically.
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We're on a mission to supercharge the end-to-end delivery experience for fashion retailers and their customers.
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One-for-All Platform For Traders. Stocks, Crypto and FX. Data Consumable via API & Sheets Add-Ins.
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We build tools and frameworks that help developers deliver API integrations that work.
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Smart Data delivered as a Service - simply, safely, and securely.
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Carbon Management Software and Services
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Woodseer Global is an advanced algorithmic system that gives huge coverage matched with high levels of accuracy.
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We are a Financial Technology UK-based company providing a high-quality programming service specialising with the cTrader trading platform.
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Infosit is a Digital Agency that transforms ideas into Digital Assets.
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Secure and Protect your companies customer facing APIs by using the Qoder geo-dispersed network of API gateways.
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API integration service
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Enigma Soft is a software company that specializes in web and mobile application development, API integration and database management.
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Payment Gateway aggregater to collect payments and subscription from any Payment gateways in the world.
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Use any Google Sheet or Excel Online spreadsheet to power a fully-fledged JSON API, no coding required.
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Pathway GDS is a B2B platform that provides connectivity solutions to the vacation rental sector.
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fixspec is a supported, cloud-based FIX connectivity platform.
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Popularowl helps to build public-facing APIs and API platforms to e-commerce, financial, and telecommunications companies.
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Open Exchange Rates is a data API that shows foreign exchange rates.
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AI for software development
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FSBT.tech creates an open API platform that opens a wide spectrum of possibilities for software developers and partner institutions.
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Monetize your data, view & control your digital footprint. Earn money via sharing your data with vetted companies.
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Fashion Technology Platform for Brands, Retailers and Influencers
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Platern provides a platform to connect to multiple APIs for business to connect directly to payment accounts.
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ApiAxle is a proxy software that manages network features and provides analytical data on network traffic.
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Tech startup doing awesome things in the logistics/rideshare/transport/tourism space
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Coposition is the secure and trusted way to manage location data
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Microquery is to provide enterprise software applications, solutions, and services. It provides services like mobile app development, etc.,
No upfront fees and rolling 1 month contracts. ROI driven SEO.