Who speak and who use RainTPL:

is an open source framework PHP based on raintpl and developed by the same team.
Coming soon ... Article and simple tutorial. 19 Promising PHP Template Engines
article that speak about the 19 promising template engine., choose RainTPL
Memht is an open source cms that use RainTPL.
It's a website where you can find a good tutorial about RainTPL.