Yafi stands for Yet Another Framework Implementation. This is another attempt to build MDA (Model Driven Application) framework. The main language is M (MUMPS) provided by FIS gt.m application. And the main UI is web-based. In cgi mode Hello world sample program is up to 3 times slower when running on M than PHP(look inside pre-tests folder). Due to this fact the only way is to use FastCGI interface.