Successful Domain-Specific Languages ? Which one do you use? [closed]

Answer 1

The two (not already mentionned) which have impressed me most are:

• OpenSCAD for solid 3D modelling
• TaskJuggler for project management (!)

I'm a big fan of declarative DSLs. Operational DSLs (like Maple, Mathematica and R are nice too, but not that different from conventional langauges).