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80 Top Open Source Companies and Startups in the UK

This article showcases some of the most popular players operating in the Open Source space. Our analysts selected these companies because they excel in one of the following categories:

  • Innovcolation
    • Innovative ideas
    • Innovative route to market
    • Innovative product
  • Growth
    • Exceptional growth
    • Exceptional growth strategy
  • Market Position
    • Market domination
    • Market leader
    • Strong market competitor

Data sourced from Crunchbase and SEMRush.

This list may include both state and private ventures providing the most value within the Open Source industry.

Top Open Source Companies


Ubuntu

Ubuntu is a Debian-based open source Linux operating system for PC, tablet, phone, and cloud platforms.

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Rabbit Technologies

Rabbit Technologies offers RabbitMQ which is open source message broker software implementing the advanced message queuing protocol (AMQP).

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Janes

Janes is the trusted global agency for open-source defence intelligence, providing unrivalled interconnected insights.

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Snyk

Snyk is a developer of security analysis tools used to identify open-source vulnerabilities.

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Aave

Aave is an open source non-custodial protocol on Ethereum for decentralized lending and borrowing.

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Matrix

Open Source, Interoperable IP Comms

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draw.io

draw.io is a free online diagramming software application for building diagramming applications.

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Bacula

Open source set of computer programs that permits the system administrator to manage backup, recovery, and verification.

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Canonical

Canonical is a computer software company that markets commercial support and related services for Ubuntu and related projects.

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IRCCloud

IRCCloud is a modern, always-connected IRC client that works on mobile and the web

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Gephi

Gephi is an open-source software for network visualization and analysis.

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Silicon

Silicon UK, is the authoritative UK source for news, features and reviews of business technology.

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The Xen Project

The Xen Project is an open-source virtualization platform that powers the world’s largest clouds in production.

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Seldon

Machine Learning Deployment Platform

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ResourceSpace

ResourceSpace open source digital asset management software is the simple, fast, & free way to organise your digital assets.

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Open Microscopy Environment

OME develops open-source software and data format standards for the storage and manipulation of biological microscopy data.

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CUBA.platform

CUBA.platform is a high-level open source Java framework for the rapid development of enterprise applications.

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Snowplow Analytics

Snowplow Analytics provides enterprise-strength digital analytics across multiple platforms

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Collabora

Collabora is a global consultancy specialising in delivering the benefits of open source software to the commercial world.

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Altinity

Altinity is the leading service and software provider for ClickHouse – an open source SQL data warehouse.

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Lenses.io

DataOps – A real-time applications and data operation portal

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Open Knowledge Foundation

The Open Knowledge Foundation works toward a world in which the sharing of data and information is simple and ubiquitous.

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ClamXav

ClamXav is a free malware scanner for Mac OS X.

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ChupaMobile

ChupaMobile is a marketplace where everybody can buy professional apps and games, ready to be customized and distributed on the App Stores.

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NCTech

NCTech is a big data and analytics provider. Pioneering edge-to-cloud big data capture & provision with ML/AI for Google, government & AEC

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Cognidox

Cognidox is a U.K.-based company that provides cloud-hosted CDOXs, extranet web portals, and graphical quality management systems.

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Parity Technologies

Parity aims to enable businesses and organisations to capitalize on blockchain technology and benefit from the new opportunities.

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ROLUSTECH

Official SugarCRM and Salesforce Partners providing expert development and consultancy services.

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ReportLab

Report Lab builds solutions to generate rich, attractive and fully bespoke PDF documents at incredible speeds.

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Easy Software Ltd.

Easy Software is an open source company in the field of business software.

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Brownbook.net

Brownbook is the crowd-sourced global business listings database, with more than 35 million businesses listed in over 200 countries.

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NetWatch Global

NetWatch Global is the largest and most successful open-source investigation company.

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Open Classifieds

Create Amazing Classifieds Websites

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Jaaz Portal

Complete, out-of-box, automated web hosting solution licensed also as an Open Source.

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Jobberbase

Jobberbase is an open-source job board platform that enables the creation of job sites on the internet.

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Squiz UK

Squiz is a global technology and strategy business that drives digital transformation for its customers.

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Centricular

Centricular helps with GStreamer, cross-platform multimedia, graphics, and related Open Source technologies.

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Openplay

OpenPlay is an online platform that allows any sports facility to take online bookings, payments and manage their customers.

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Eagle Genomics

Eagle Genomics is a enterprise software solutions company to enable the management, orchestration and exploitation of life sciences data.

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Mastodon C

Offer the open source technology platform and the skills to help you realise that potential, and we do it all on zero carbon infrastructure.

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eSynergy Solutions

eSynergy Solutions offers businesses with recruitment services for developers, programmers, and engineers.

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Black Pepper Software

Black Pepper Software is a leading agile software development company.

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QuestDB

QuestDB is an open-source SQL database designed to process time-series data, faster.

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Pillar Project

Platform to contextually manage your identity and transact with the services of the emerging web3 digital economy.

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Aventus Systems

Aventus is a fair, secure, and transparent blockchain-based event ticketing solution that eliminates fraud and unregulated touting.

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Flooved

Flooved is a provider of interactive social e-textbooks with personalized content for students and professors.

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Monax

Monax is a blockchain-native SAAS company on a mission to change the way folks track & manage their contractual obligations.

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Sift

Sift is an online publisher and strategic website engineer providing content, tools and website services for accounting firms.

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Invotra Ltd

Enterprise Intranet and Portal solutions for organisations worldwide

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Pandastream

Pandastream is an open source video encoding solution.

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Virya Group Limited

Virya Group are a technology-focused full service agency, specialising in open source technologies.

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Symbian Software Ltd.

Symbian develops the operating system used on Nokia, Motorola and Samsung mobile and smart phones.

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CO:CUBED

CO:CUBED helps FTSE100 companies to embrace the startup revolution, by defining and executing their collaborative innovation capabilities.

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Quru Limited

An enterprise software solutions house specialising in open source and development

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Caesar.Team

Caesar.Team is the open-source password and document manager for teams

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Virya Technologies Ltd

Virya Technologies Ltd is a consultation company that helps other companies stay ahead of the advancements in technology.

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Synverse

Synverse is the next generation global IT services provider driven by innovation and accelerators which are underpinned by industry best

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Ricston

Services for Integration & Mobility

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ApiAxle

ApiAxle is a proxy software that manages network features and provides analytical data on network traffic.

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AFKAR

An “Internet Of Things” Startup business.

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OpenIOLabs

Open source hardware translator: Monitor and control multiple devices with one unified programming interface.

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Open Source Living

Open Source Living is an information and archive service for high quality Open Source software (OSS).

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Cloud Identity

Cloud Identity is a cloud service that is focused on access and identity security for websites.

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Technology Blueprint

Technology Blueprint

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SWCMS

SWCMS is an open source development team focused on creating a social news platform with similar functionality to the market leaders such

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Blockware

Software Reimagined

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Vorari

Open Source Cloud SaaS Solutions

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Code For The People

Code For The People, a specialist WordPress web development agency, based in the UK.

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Curverider

Curverider develops socially-enabled software that allows organizations to increase knowledge-sharing and productivity.

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ocProducts

ocProducts is the developer of Composr CMS, and a provider of web development and web marketing services.

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Orchard

Get a Docker host in the cloud, instantly.

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Bashton

Open Source Consultancy

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ipcortex

ipcortex focuses on the development of technology solutions for business communications.

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Open-First

Open-First specialize in helping companies of all sizes re-examine their communication, design, innovation, management and support.

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Speerhead

We specialise in Contract and Permanent staff in Sales and Engineering for the European DevOps Community.

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TheWebFellas

TheWebFellas is an online company that build Web & Mobile Applications.

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moyd.co ltd

Moyd.co is the new Cloud Operator Monitor and DNS Server Software with High Availability, Load Balancing and GeoDNS functionality.

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WaveCrest IT

WaveCrest IT specialise in producing bespoke business administration products for small to medium companies.

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Tools Journal

Trusted software reviews at ToolsJournal

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TwistPHP

TwistPHP is a microframework for the PHP programming language. It follows the model-view-controller architecture pattern for development.

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