Textpattern is a free, open-source content management system for building and running websites. It uses a tag-based template language to structure pages, has a lean core extended through plugins, and supports Textile markup natively, with Markdown available through a plugin. Its admin interface is available in more than fifty languages. It is written in PHP and works with MySQL. You install it yourself on a web server you control; the project's website describes no hosted service.
Textpattern is developed by the volunteer Textpattern Development Team, its source code is on GitHub, and it is licensed under the GNU GPL version 2. The project is not a commercial vendor. Where your data resides and which law applies to it is therefore determined by the hosting provider you choose: with a European host, the data stays in Europe. You can inspect, modify and keep running the open source code yourself, which limits dependence on a single supplier. The project website is hosted with sponsorship from DigitalOcean.