1. Assembly Language
  2. C/C++
  3. Eggdrop (Eggdrop is a popular IRC bot and the oldest still in active development)
  4. Erlang (a general-purpose concurrent, garbage-collected programming language and runtime system)
  5. Fortran Programming Language
  6. Forth/4th (an imperative stack-based computer programming language and programming environment)
  7. Java
  8. JavaScript
  9. Lua
  10. PHP
  11. Perl
  12. Python
  13. Ruby
  14. Shell script
  15. Sigscheme (SigScheme is a R5RS Scheme interpreter for embedded use.)
  16. Slsh (Interpreter for S-Lang scripts)
  17. Tcl  (Tool Command Language)
  18. Vala (C-sharp like language for the GObje)