공개된 Interactive Fiction.

1. Takahashi 's Web
   http://www.nscripter.com/
   
   
   
2. Adventure Game Studio
   http://www.adventuregamestudio.co.uk/
   
   
   
3. The Ren'Py Visual Novel Engine
   http://www.renpy.org/
   
   
4. Text Adventure Development System.
   http://www.tads.org/

모두 공개 무료 엔진..

아직 자세한건 살펴 보지 않았다.