To be able to extend BinProlog and possibly embed it as logic engine in your no run-time fee application you will need a BinProlog C-source code license. See the files SOURCE.LICENSE and PRICING for more information. You can also interact with other languages under UNIX using the bidirectional pipe based interface starting from BinProlog's Tcl/Tk interfaced (see directory TCL).
The following sequence of quick examples shows how it works.