Grav

Grav is a Fast, Simple, and Flexible, file-based Web-platform. The Grav admin plugin provides a simple and intuitive interface to make configuration and content creation easy and enjoyable.

Features:

• Fast: Performance is not just an afterthought, we baked it in from the start
• Extensible: Grav has a powerful API and sophisticated Package Manager to make it super flexible
• Open Source: Grav is Open Source, and all the code is available on GitHub.com