Bloomberg

USA

Python is one of the most used languages at Bloomberg, with more than half a million Python files and over 100 million lines of code.In less than a decade, we’ve gone from taking our first steps with the language to being one of the leading contributors to its evolution. We believe in Python’s power and its community – and we’re committed to strengthening its future.

Gel

We build the database developers love to use. We're giving it to them with the world's first graph-relational database: the maintainability of a strict schema paired with the ability to easily link objects. We tie the whole thing together with EdgeQL: a query language for those of us who couldn't tie a neck tie to save our lives.

Microsoft

USA

Open Source enables Microsoft products and services to bring choice, technology and community to our customers.

Arm

Born more than 30 years ago with the goal of designing a computer intended to run on a battery, Arm has become a global compute platform delivering advanced solutions that allow the world’s leading technology companies to unleash the unprecedented experiences and capabilities of AI.

Google Cloud

The new way to cloud starts here: Build with generative AI, deploy apps fast, and analyze data in seconds—all with Google-grade security.

JetBrains

Software Development Tools — Czech Republic

JetBrains develops intelligent IDEs like PyCharm and IntelliJ IDEA, supporting developers globally. In 2025, JetBrains sponsored the International Olympiad in Informatics (IOI) with free software licenses and participated in GDC 2025, while running its annual Developer Ecosystem Survey.

Numberly

Numberly, Marketing Technologist, met la data au service de la relation client. Le groupe permet aux entreprises de comprendre les besoins de leurs prospects et clients et d’interagir avec chacun de manière performante et pertinente.

Picnic

Grocery Delivery — Germany

Picnic is a sustainable grocery delivery service operating in Europe. While no 2025 sponsorships appear in current data, Picnic focuses on eco-friendly logistics and affordable shopping experiences.

Pydantic

The Pydantic platform gives devs visibility to stay in flow, from local to prod, from AI to API. Ship robust apps faster, in Python, TypeScript, Rust and others.

TravelPerk

Spain

TravelPerk is a travel-management company that provides companies with a variety of travel- and expense-management services. A business travel platform that gives businesses and travelers the freedom to meet colleagues, clients, and partners in real life. The way they want to. Giving them the power to create and curate the experiences that puts them and these relationships first.

Apify

Czechia

Apify is the largest ecosystem where developers build, deploy, and publish web scrapers, AI agents, and automation tools. We call them Actors.

Ataccama

Czechia

Ataccama is an international software company full of data experts and enthusiasts developing Ataccama ONE—a unified Data Management platform that helps customers use the power of automated data governance and visualization to do exceptional things with their data.

Pretix

Open Source Ticketing — Germany

Pretix is a free, open-source ticketing system designed for privacy and scalability. It supports events of all sizes, from small meetups to large conferences, with customizable features.

Snowflake

Cloud Data Platforms — USA

Snowflake delivers a cloud-based data warehouse for scalable analytics and AI. While 2025-specific sponsorships aren’t detailed in current data, Snowflake continues to lead in data infrastructure innovation.

Anaconda

Anaconda is built to advance AI with open source at scale, giving builders and organizations the confidence to increase productivity, and save time, spend and risk associated with open source.

Sema

USA

Sema is a software company that is squarely focused on understanding and improving tech. We build tools that bring technologists and non-technologists together. Because when that happens, engineers do their best work, organizations build great products, and true innovation can take shape.

Sentry

Developer Tools & Error Tracking — USA

Sentry provides real-time error tracking for developers, helping teams monitor and fix issues in code. While no 2025 sponsorships appear in current data, Sentry remains a key tool for application stability.

OpenEDG PYTHON INSTITUTE

Join the community of learners, creators, professionals, educators, and world-changers. Learn, certify, make an impact. Expand your career opportunities with the Python Institute's training and certification programs. Program your future.

Qt

Qt is the leading independent technology for cross-platform development. Create connected devices, UIs and applications that run anywhere on any device, on any operating system at any time.

ROSSUM

Czechia

Passionate about making a positive impact on people’s working lives, we streamline document processing through our team, technology, and expertise.

EuroPython Society

Technology & Non-Profit — Sweden

The EuroPython Society (EPS) is a Swedish non-profit organization dedicated to supporting Python communities across Europe. It organizes EuroPython conferences, sponsors initiatives like financial aid programs, and promotes diversity and inclusion in the tech ecosystem.

Python Software Foundation

Technology & Non-Profit — US

The Python Software Foundation is an organization devoted to advancing open source technology related to the Python programming language.

1Password

Cybersecurity & Privacy — Toronto, Ontario, Canada

1Password is a leading provider of password management solutions, offering secure tools for individuals and businesses to protect sensitive data and combat shadow IT. Founded in 2005, the company prioritizes user experience, privacy, and security across its cross-platform applications.

Evolabel

AI & Data Labeling — France

Evolabel specializes in AI training data solutions, providing high-quality labeling services for machine learning projects. While specific 2025 partnerships aren’t detailed in available data, Evolabel remains a key player in scalable AI development.

Pretalx

Open Source Event Management — Germany

Pretalx is an open-source platform for managing conference submissions and schedules. Used by PyCon events and others, it prioritizes privacy and flexibility for organizers and attendees.

Prusa Research

3D printers — Czechia

A Czech company founded by Josef Prusa making award-winning open source desktop 3D printers