🏴󠁧󠁢󠁥󠁮󠁧󠁿 56 Top English Developer APIs Startups & Firms

This article showcases our top picks for the best English Developer APIs companies. These startups and companies are taking a variety of approaches to innovating the Developer APIs industry, but are all exceptional companies well worth a follow.

We tried to pick companies across the size spectrum from cutting edge startups to established brands.

We selected these startups and companies for exceptional performance in one of these categories:

• Innovation
  • Innovative ideas
  • Innovative route to market
  • Innovative product
• Growth
  • Exceptional growth
  • Exceptional growth strategy
• Management
• Societal impact

[adace-ad id=”7108″]

Top English Developer APIs Startups

Data sourced from Crunchbase and SemRush.

Railsbank

Crunchbase Website Twitter Facebook Linkedin

Railsbank is an open banking API and platform that gives regulated and un-regulated companies access to global banking.

TrueLayer

Crunchbase Website Twitter Facebook Linkedin

TrueLayer is a fintech platform utilized to build financial apps that connect to bank data, verify accounts, and access transactions.

Codat

Crunchbase Website Twitter Facebook Linkedin

Codat is an API platform that provides real-time connectivity to the financial software used by small businesses.

Duffel

Crunchbase Website Twitter Facebook Linkedin

Duffel provides an online platform that allows users to search, book, and manage flights from multiple airlines.

Bud

Crunchbase Website Twitter Facebook Linkedin

Bud is a financial network combining APIs & data to create a new species of connected experiences.

42Crunch

Crunchbase Website Twitter Facebook Linkedin

42Crunch is an API Security platform, addressing the development, testing, and deployment security requirements of API infrastructure.

FIDEL API

Crunchbase Website Twitter Facebook Linkedin

Fidel is a payments API platform for developers, providing tools to build powerful, real-time products on top of payment cards.

Amity

Crunchbase Website Twitter Facebook Linkedin

Amity powers in-app social experiences, helping developers to easily add pre-built social features to any app with a few lines of code.

WealthKernel

Crunchbase Website Twitter Facebook Linkedin

WealthKernel is a supplier of infrastructure for companies looking to offer digital investment services.

Tyk

Crunchbase Website Twitter Facebook Linkedin

Tyk is an open source API gateway and management platform that provides on-premises, cloud/multi-cloud, and enterprise.

Pusher

Crunchbase Website Twitter Facebook Linkedin

Pusher Ltd. provides a hosted API service for adding real-time bi-directional.

tru.ID

Crunchbase Website Twitter Facebook Linkedin

tru.ID is reinventing mobile authentication for today’s world through a modern developer platform.

ARWAY

Crunchbase Website Twitter Facebook Linkedin

ARWAY is a spatial mapping platform critical to building the Metaverse.

Matrix

Crunchbase Website Twitter Facebook Linkedin

Open Source, Interoperable IP Comms

Nethermind

Crunchbase Website Twitter Facebook Linkedin

API marketplace with blockchain payments for pay as you go for API usage, Ethereum clients, infrastructure and consulting.

TouchNote

Crunchbase Website Twitter Facebook Linkedin

TouchNote helps you send thoughtful cards and prints to loved ones, right from your mobile, tablet or desktop.

Metomic

Crunchbase Website Twitter Facebook Linkedin

The power of data without the risk. Metomic detects & protects sensitive data across all your internal databases & cloud applications.

Hutoma

Crunchbase Website Twitter Facebook Linkedin

Hutoma is a building emotionally evolved AI interfaces for connected devices, app and web powered by Deep Learning.

Synth

Crunchbase Website Twitter Facebook Linkedin

Synthetic data for quicker and privacy compliant development and testing

Photocert

Crunchbase Website Twitter Facebook Linkedin

Validates the authenticity of photos & videos and performs image analysis to automate processes with a focus in the insurance sector.

Modularity Grid

Crunchbase Website Twitter Facebook Linkedin

Intelligent power management for terrestrial and aerospace use cases

MindLink Software

Crunchbase Website Twitter Facebook Linkedin

MindLink provides business critical collaboration enabled through Enterprise Chat.

ParcelBright

Crunchbase Website Twitter Facebook Linkedin

ParcelBright provides small e-commerce stores with package deliver services.

Repay Solutions

Crunchbase Website Twitter Facebook Linkedin

Over The Top payment platform connecting businesses to the latest real-time payments innovations without changing bank.

Imin

Crunchbase Website Twitter Facebook Linkedin

Imin is a technology firm that makes physical activity searchable & bookable by using open data in the health and fitness sector.

Apply Financial

Crunchbase Website Twitter Facebook Linkedin

Validate API ( for single realtime payment validation) and Validate Data Manager API (for bulk payment file validation )

Impala

Crunchbase Website Twitter Facebook Linkedin

Impala’s API connects room sellers and hotels, instantly. We empower you to build, innovate and sell.

Kite

Crunchbase Website Twitter Facebook Linkedin

KITE is the most advanced software platform for powering a global print-on-demand internet business.

Therapy-Box

Crunchbase Website Twitter Facebook Linkedin

Therapy-Box are developers specialising in healthcare and education.

Hostarium

Crunchbase Website Twitter Facebook Linkedin

Hostarium’s unique platform provides scalable, affordable hosting solutions using the power of Google Cloud

Safe & The City

Crunchbase Website Twitter Facebook Linkedin

The Waze for personal safety navigation.

CRUZEO Protocol

Crunchbase Website Twitter Facebook Linkedin

CRUZEO is a platform which lets users build at-scale decentralized marketplaces; with just a few clicks, no code necessary.

Careerjet

Crunchbase Website Twitter Facebook Linkedin

Careerjet is a semantic analysis technology-based vertical search engine connecting various job vacancy listings globally.

Moosend

Crunchbase Website Twitter Facebook Linkedin

Email marketing service provider

Klappo

Crunchbase Website Twitter Facebook Linkedin

Klappo is a semantic platform for ingredients.

Pole Star Space Applications

Crunchbase Website Twitter Facebook Linkedin

Pole Star is a SaaS software solutions and APIs development company.

Fondy

Crunchbase Website Twitter Facebook Linkedin

International smart payment platform. Online acquiring with global benefits.

Flagsmith

Crunchbase Website Twitter Facebook Linkedin

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. We’re 100% Open Source.

ComplyCube

Crunchbase Website Twitter Facebook Linkedin

ComplyCube is a cloud platform for automating Identity Verification (IDV), Anti-Money Laundering (AML) & Know Your Customer (KYC) compliance

Babl Global Limited

Crunchbase Website Twitter Facebook Linkedin

A Cloud, SaaS Secure Video, Audio meeting and Events business using our own proprietary technology.

KashFlow Software

Crunchbase Website Twitter Facebook Linkedin

KashFlow Software is a simple but powerful, online accounting package developed with small business owners in mind.

Ceerus

Crunchbase Website Twitter Facebook Linkedin

Security to communicate freely

Magora Systems

Crunchbase Website Twitter Facebook Linkedin

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.

Qwerly

Crunchbase Website Twitter Facebook Linkedin

Qwerly aggregates social media data from various sources and makes it available via an API.

Carryr

Crunchbase Website Twitter Facebook Linkedin

We’re on a mission to supercharge the end-to-end delivery experience for fashion retailers and their customers.

NStack

Crunchbase Website Twitter Facebook Linkedin

NStack is a platform which connects data sources, predictive models, and internal tools together.

MockLab

Crunchbase Website Twitter Facebook Linkedin

Super-fast hosted API mocking (Service Virtualization), with a QA-friendly UI

SwiftDil

Crunchbase Website Twitter Facebook Linkedin

A connected platform to automate Anti-Money Laundering (AML) and Know Your Customer (KYC) Processes — API & Web Portal

Pirean

Crunchbase Website Twitter Facebook Linkedin

Consumer and Workforce Identity as a Service, Pirean simplifies how customer’s deliver IAM capabilities for enterprise web and mobile apps.

Data Catalyst

Crunchbase Website Twitter Facebook Linkedin

Smart Data delivered as a Service – simply, safely, and securely.

Qoder

Crunchbase Website Twitter Facebook Linkedin

Secure and Protect your companies customer facing APIs by using the Qoder geo-dispersed network of API gateways.

Retechnica

Crunchbase Website Twitter Facebook Linkedin

What it is Ingenia is a text analytics API + web app that tags your content automatically.

fixspec

Crunchbase Website Twitter Facebook Linkedin

fixspec is a supported, cloud-based FIX connectivity platform.

Infosit

Crunchbase Website Twitter Facebook Linkedin

Infosit is a Digital Agency that transforms ideas into Digital Assets.

All Markets

Crunchbase Website Twitter Facebook Linkedin

One-for-All Platform For Traders. Stocks, Crypto and FX. Data Consumable via API & Sheets Add-Ins.

Woodseer Global

Crunchbase Website Twitter Facebook Linkedin

Woodseer Global is an advanced algorithmic system that gives huge coverage matched with high levels of accuracy.