GSL Implementations

Took 2 days to implement in Perl
   A slow, limited GSL interpreter
   But already the result of many years' work

GSLgen in C has taken a bit longer
   Sophisticated code generation engine
   Very fast, even for large-scale work
   Advanced, but not over-complex

Part of the iMatix Studio product
   Web-based application development toolkit
   Heavily oriented towards code generation