Welcome to Flatboard 5
Flatboard 5 is a modern, lightweight forum platform built with PHP 8. It combines simplicity with powerful features, making it perfect for communities of all sizes.
Current Version: 5.0.0-beta.4 (EGG HATCH) - Released December 10, 2025
What is Flatboard 5?
Flatboard 5 is a next-generation forum software that offers:
- Lightweight Architecture - JSON, no heavy database required
- Modern PHP 8 - Built with the latest PHP features and best practices
- MVC Pattern - Clean, maintainable code structure
- Plugin System - Extensible through a powerful plugin architecture
- Theme Support - Fully customizable themes
- Security First - Built-in CSRF protection, rate limiting, and input validation
- Multi-language - Support for multiple languages out of the box
- SEO Optimized - Complete SEO features with meta tags, structured data, and sitemaps
- License - Flatboard 5 Licensed Under GPL3