Thanks to 
 - Richard Jones for his dumper.ml module (public domain?)
 - Jane Street for the backtrace module and lib-sexp/ (LGPL)
 - Martin Jambon, Mika Illouz and Gert Stolpmann for lib-json/ (BSD-like)
 - Nicolas Canasse for lib-xml/ (LGPL)
 - Thomas Gazagnaire for dynType (BSD-like)
 - Maas-Maarten Zeeman for OUnit (BSD-like)
 - Thorsten Ohl for xHTML.ml (GPL)
 - Brian Hurt and Nicolas Cannasse for their dynArray module (LGPL)
 - Christophe Troestler for his ANSITerminal.ml module (LGPL)
 - Sebastien ferre for his suffix tree module (public domain?)
 - Anil Madhavapeddy for pretty_print_ident.ml (BSD-like)