Top 26 SaaS Companies with "Commercial Open Source Companies" tag in May 2026

Paris, France

Fast, open-source and secure language models

Berlin, Germany

Qdrant is an open-source vector search engine. It deploys as an API service providing a search for the nearest high-dimensional vectors. With Qdrant, embeddings or neural network encoders can be turned into full-fledged applications for matching, searching, recommending, and much more.

Stockholm, Sweden

​Serverpod is an open-source backend framework written in Dart, specifically designed to integrate seamlessly with Flutter applications. It enables developers to write both client and server-side code in Dart, promoting a unified and efficient development experience.​

Oslo, Norway

Celerway is a Norwegian technology company specializing in mobile-first, multi-WAN connectivity solutions designed for seamless, secure, and high-performance networking in dynamic environments. Founded in 2012 and headquartered in Oslo, Celerway develops both hardware and software that enable enterprises to maintain reliable internet access across multiple simultaneous wireless and wired connections.

Birgu, Malta

CrabNebula is a company built on the vision of enabling individuals, entrepreneurs and businesses to sustainably build, develop and distribute their multi-platform apps to mass audiences.

Wrocław, Poland

Mirumee is a Python and JS software house that specializes in developing unique products and composable systems. We begin our development cycle with the creation of an experience that transforms into a concept, which later becomes a working project.

Paris, France

Open Source Infrastructure for the Financial Internet

Berlin, Germany

The AI platform for team productivity

Paris, France

Probabl delivers universal technology enabling data scientists and teams to make the most of their data, leveraging the best practice in machine learning and artificial intelligence. Probabl is a spinoff from the Inria research lab and co-founded by experienced tech entrepreneurs and core-developers of scikit-learn. Probabl is the official operator of the scikit-learn brand, and its main contributor. Probabl's core mission is to develop and maintain commons for data science, from scikit-learn to a complete suite of tools and solutions for machine learning and artificial intelligence.

Bad Schönborn, Germany

Pionix is dedicated to advancing the EV charging industry through open source technology. Founded in 2020, the company is headquartered in the Karlsruhe Metropolitan Area, Germany, and employs a team of 40 experts. With its vision to create the backbone for every EV charger worldwide, Pionix is recognized for its expertise in EV charging communication protocols and its commitment to innovation. Based on EVerest, an open source software stack for EV charging stations, Pionix provides enterprise-grade products and services tailored to the needs of the EV charging infrastructure, enabling reliable and scalable solutions. The company is driven by a shared goal: using open source technology to foster a cleaner, more sustainable future by making EV charging accessible, robust, and efficient for all stakeholders - drivers, businesses, and the environment.