# Mavri > Free, open-source, self-hosted invoicing and quotes software (AGPL-3.0). Runs as one Docker container with SQLite. Tracks payments, exports UBL 2.1 and XRechnung XML, and has a REST API, signed webhooks and an MCP server. It is not a payment processor and not a hosted service. ## Key pages - [Documentation](https://mavri.nodedr.com/docs/) - [FAQ: questions and answers about Mavri](https://mavri.nodedr.com/faq/) - [About: why Mavri was built and who created it](https://mavri.nodedr.com/about/) - [User guide](https://mavri.nodedr.com/docs/guide/) - [API reference](https://mavri.nodedr.com/docs/api/) - [Configuration](https://mavri.nodedr.com/docs/configuration/) - [Features](https://mavri.nodedr.com/features/) - [How to use, screen by screen](https://mavri.nodedr.com/how-to-use/) - [Install: Docker Compose quick start](https://mavri.nodedr.com/#quick-start) - [Where Mavri is available: Docker, Debian/Ubuntu .deb, CasaOS, Windows, macOS (not the Microsoft Store)](https://mavri.nodedr.com/get-started/#availability) - [Install on CasaOS and ZimaOS](https://mavri.nodedr.com/install/casaos/) - [Roadmap and current limits](https://mavri.nodedr.com/roadmap/) - [Blog](https://mavri.nodedr.com/blog/) ## Source and docs - [GitHub repository](https://github.com/Raktim94/mavri) - [User guide (source)](https://github.com/Raktim94/mavri/blob/main/docs/GUIDE.md) - [API reference (source)](https://github.com/Raktim94/mavri/blob/main/docs/API.md) ## Full text - [All key pages as plain text](https://mavri.nodedr.com/llms-full.txt)