# Open Source Europe

> Open Source Europe (OSE) is a Belgian non-profit association. It is the fiscal host for open source projects in Europe, and it manages funds for foundations and companies that support open source.

Projects that OSE hosts receive donations, pay expenses and apply for grants without a legal entity of their own. All their income and expenses are public on the Open Collective platform. To apply, use https://opencollective.com/europe/apply.

The documentation at https://www.opensourceeurope.org/docs/ answers questions about hosting, expenses, contributions and policies. https://www.opensourceeurope.org/llms-full.txt holds the text of every docs page in one file. Each docs page also has a Markdown copy: replace the slash at the end of its address with .md, as in https://www.opensourceeurope.org/docs/how-it-works/basics.md.

## Website

- [Open Source Europe | A simple fiscal home for open source projects](https://www.opensourceeurope.org/): Open Source Europe (OSE) is a European nonprofit that offers open source projects a simple fiscal home. Receive donations, manage expenses, and grow without creating a legal entity.
- [About us](https://www.opensourceeurope.org/about/): Open Source Europe was founded in Brussels in 2017 and is now a fiscal host for more than 270 open source projects. Our story, vision, values, team and pricing.
- [Ask Open Source Europe](https://www.opensourceeurope.org/ask/): Ask anything about Open Source Europe and get cited answers from the public OSE documentation. A sovereign, EU-hosted assistant.
- [Contact](https://www.opensourceeurope.org/contact/): Contact Open Source Europe. Send us a message with the contact form, or write to us by email. Our office is in Brussels.
- [How to join](https://www.opensourceeurope.org/how-to-join/): Joining Open Source Europe is simple. Submit your project, publish your collective page, and start receiving funds, with no legal entity to create.
- [Privacy Policy](https://www.opensourceeurope.org/privacy-policy/): How the Open Source Europe website handles your personal data. It sets no cookies, runs no tracking scripts, and loads nothing from other websites.
- [Our services](https://www.opensourceeurope.org/services/): Open Source Europe supports open source projects with fiscal hosting, admin and financial support, and technical resources and guidance.
- [Admin & financial support](https://www.opensourceeurope.org/services/admin-financial-support/): OSE acts as the financial back office of open source projects. Contributors get reimbursed, invoices are checked, and every transaction is public.
- [Fiscal hosting](https://www.opensourceeurope.org/services/fiscal-hosting/): OSE offers fiscal hosting, a simple way for open source projects to receive funds, stay compliant, and share resources transparently without creating a legal entity.
- [Technical Resources & Guidance](https://www.opensourceeurope.org/services/technical-resources-guidance/): OSE supports open source projects with resources, documentation, and a network of peers and funders that build long-term impact.
- [Terms of Hosting](https://www.opensourceeurope.org/term-conditions/): The Terms of Hosting that an initiative accepts when it asks to be hosted by the Association.

## Documentation

- [Open Source Europe documentation](https://www.opensourceeurope.org/docs/): Practical guidance for joining OSE, receiving funds and managing your Collective.
- [How to apply](https://www.opensourceeurope.org/docs/getting-started/how-to-apply/): Use this guide to prepare and submit a hosting application, and to learn how OSE reviews it.
- [Eligibility](https://www.opensourceeurope.org/docs/getting-started/how-to-apply/eligibility/): Open Source Europe (OSE) welcomes initiatives from around the world that align with our mission and values.
- [Application Questions](https://www.opensourceeurope.org/docs/getting-started/how-to-apply/application-questions/): Prepare your answers to these questions before you apply to Open Source Europe (OSE), so the application goes faster.
- [Basics](https://www.opensourceeurope.org/docs/how-it-works/basics/): This is your starting point after OSE accepts your Collective. Work through the essentials, then use the relevant guide for each transaction.
- [Deciding on How to Use Your Money](https://www.opensourceeurope.org/docs/guides/deciding-on-how-to-use-your-money/): How to use funds for your initiative on OSE
- [Fiscal Hosting FAQs](https://www.opensourceeurope.org/docs/faq/fiscal-hosting-faqs/): A Fiscal Host is an organization that holds funds on behalf of Collectives, so they can operate financially without having to set up a legal entity.
- [Financial Contributions – How to Donate](https://www.opensourceeurope.org/docs/how-it-works/financial-contributions-how-to-donate/): Guides for donors and financial contributors
- [Wire Transfer Instructions via Open Collective Platform](https://www.opensourceeurope.org/docs/how-it-works/financial-contributions-how-to-donate/wire-transfer-instructions-via-open-collective-platform/): This option is available for all funds.
- [Applying for Grants](https://www.opensourceeurope.org/docs/how-it-works/financial-contributions-how-to-donate/applying-for-grants/): Use this guide when a funder may support your Collective through OSE.
- [Fundraising Tools & Resources](https://www.opensourceeurope.org/docs/how-it-works/financial-contributions-how-to-donate/fundraising-tools-and-resources/): More ways to raise funds
- [Setting up GitHub Sponsors](https://www.opensourceeurope.org/docs/how-it-works/financial-contributions-how-to-donate/setting-up-github-sponsors/): Guide to connecting GitHub Sponsors for Organizations to your Collective
- [Tax-Deductible Giving for U.S. Donors](https://www.opensourceeurope.org/docs/what-we-offer/tax-deductible-giving-for-us-donors/): U.S. individuals and businesses can support OSE Collectives through Myriad USA → Open Collective Europe Foundation (OCEF) → OSE.
- [Equivalency Determination Certificate](https://www.opensourceeurope.org/docs/what-we-offer/equivalency-determination-certificate/): Open Source Europe helps hosted projects receive grants from U.S. foundations through an Equivalency Determination (ED) arrangement.
- [Contributions in cryptocurrencies](https://www.opensourceeurope.org/docs/how-it-works/financial-contributions-how-to-donate/contributions-in-cryptocurrencies/): How OSE Collectives can receive cryptocurrency donations.
- [Refunds](https://www.opensourceeurope.org/docs/how-it-works/financial-contributions-how-to-donate/refunds/): Can I refund a donation or get a refund for one I have made?
- [Contributions FAQ](https://www.opensourceeurope.org/docs/faq/contributions-faq/): Questions about contributing to our hosted collectives
- [Expenses](https://www.opensourceeurope.org/docs/how-it-works/expenses/): Prepare a payment from your Collective's budget. Start by choosing the situation that matches your request.
- [Invoices or Reimbursements?](https://www.opensourceeurope.org/docs/how-it-works/expenses/invoices-or-reimbursements/): Choose the request type before you submit an expense. Use Reimbursement if you have already paid, and Invoice when a supplier asks for payment for goods or services.
- [Expenses & Getting Paid – FAQs](https://www.opensourceeurope.org/docs/how-it-works/expenses/expenses-and-getting-paid-faqs/): For the steps from planning a purchase to payment, start with the expense guide. This page answers specific payment questions.
- [Expense FAQs](https://www.opensourceeurope.org/docs/faq/expense-faqs/): The detailed answers are maintained in Expenses & Getting Paid – FAQs. Use the links below to go directly to your question.
- [Request a grant from an OSE Fund](https://www.opensourceeurope.org/docs/how-it-works/expenses/request-a-grant-for-nonprofits-only/): Besides expenses and invoices, the Open Collective platform also has a “Request a Grant” option.
- [The Partnership](https://www.opensourceeurope.org/docs/how-it-works/expenses/the-partnership/): Your Collective and Open Source Europe (OSE) work under indirect representation (représentation indirecte / middellijke vertegenwoordiging).
- [VAT in Europe and How It Works in OSE](https://www.opensourceeurope.org/docs/how-it-works/expenses/the-partnership/vat-in-europe-and-how-it-works-in-ose/): How VAT applies to purchases made by a Collective hosted by Open Source Europe (OSE), and who to ask about a specific purchase.
- [General FAQs](https://www.opensourceeurope.org/docs/faq/general-faqs/): What your initiative can do with Open Source Europe, what it costs, and how long it takes to get started.
- [Terms of Service](https://www.opensourceeurope.org/docs/terms-of-service/): Hosting with Open Source Europe is governed by the association's Terms of Hosting.
- [Contact Us](https://www.opensourceeurope.org/docs/about/contact-us/): OSE aims to answer general questions within seven business days. This is a target, not a guaranteed response time.
- [Ask OSE from your AI tools](https://www.opensourceeurope.org/docs/guides/ask-ose-from-your-ai-tools/): Connect the OSE knowledge base to your AI assistant as an MCP server, a Claude Code plugin or a Codex plugin.
- [Safeguarding Policy](https://www.opensourceeurope.org/docs/about/safeguarding-policy/): Open Source Europe (OSE) is committed to creating a safe and inclusive environment for all staff, volunteers, partners, and beneficiaries.
- [Community guidelines](https://www.opensourceeurope.org/docs/about/community-guidelines/): These community guidelines reflect the values and commitments of Open Source Europe. They aim to create a positive and productive community for all involved.
- [Terminology](https://www.opensourceeurope.org/docs/about/terminology/): We use some terms to describe processes in the Open Collective ecosystem. Please use these terms instead of 'user' when you create issues or support requests. Everyone is a user!
- [About Open Source Europe](https://www.opensourceeurope.org/docs/about-open-source-europe/): Open Source Europe is a Belgian association. It is the fiscal host for open source initiatives and works with philanthropic institutions to support regranting around the world.
- [What We Offer](https://www.opensourceeurope.org/docs/what-we-offer/): Open Source Europe provides the legal and financial infrastructure that open source projects need. You can focus on your code instead of paperwork.
- [Umbrella organisation](https://www.opensourceeurope.org/docs/what-we-offer/umbrella-organisation/): Open Source Europe (OSE) provides a shared legal and financial framework for open source projects, developer networks, and software communities.
- [The Open Collective Platform](https://www.opensourceeurope.org/docs/what-we-offer/the-open-collective-platform/): A shared tool for managing contributions, expenses, and grants with full transparency.
- [Mission, Vision & Impact areas](https://www.opensourceeurope.org/docs/about/mission-vision-and-impact-areas/): It all comes back to resilience
- [Risk and Compliance aspects](https://www.opensourceeurope.org/docs/about/risk-and-compliance-aspects/): Open Source Europe: Grant Eligibility and Risk Assessment Policy

## Blog

- [OSE blog](https://www.opensourceeurope.org/blog/): News from Open Source Europe for the open source projects we host, their maintainers and their funders.
- [Join us in Paris on 2-3 December at Digital Resilience Europe](https://www.opensourceeurope.org/blog/join-us-in-paris-at-digital-resilience-europe/): Free tickets, a call for speakers and a shared booth for the projects Open Source Europe hosts, at Digital Resilience Europe in Paris.
- [RSS feed](https://www.opensourceeurope.org/rss.xml): News from Open Source Europe for the projects we host, their maintainers and their funders. Follow it in any feed reader.

## Ask OSE from AI tools

- [OSE knowledge MCP server](https://pypi.org/project/ose-knowledge-mcp/): Searches the OSE docs and returns cited passages. It runs on your own computer, so OSE does not see your questions. Start it with `uvx ose-knowledge-mcp==0.13.30` in any MCP client.
- [Claude Code and Codex plugin](https://github.com/opensourceeurope/ose-ai): Adds the MCP server, an `ask-about-ose` skill and, in Claude Code, an `ose-researcher` agent. Install it with `/plugin marketplace add opensourceeurope/ose-ai` and `/plugin install ose-knowledge@ose-ai`.
- [Setup guide for AI tools](https://www.opensourceeurope.org/docs/guides/ask-ose-from-your-ai-tools/): How to connect the knowledge base to Claude Code, Codex, Cursor or Claude Desktop.
- [Ask OSE chat](https://www.opensourceeurope.org/ask/): A public chat that answers from the OSE docs with sources. It runs on European infrastructure.

## Optional

- [Full text of the docs](https://www.opensourceeurope.org/llms-full.txt): Every docs page in one Markdown file, with the address of each page.