Vikingboard

Vikingboard is a PHP-based discussion forum software designed from the ground up by the principle of "less is more", and features a lighting-fast cache system and dynamic web update while still being small enough to host large boards on small servers. Small, but incredibly fast and powerful. According to our benchmarks, it outperforms all current discussion board software. Vikingboard features a polished and accessible standards-compliant interface, for easier use and better SEO.