ANS Forth for Win32 and Linux/x86 (used to compile the following SF projects: acWEB, acFTP, acFreeProxy, acSMTP, Forth-Script)
SP-Forth is really very fast.
Great product spf
SP-Forth is one of the fastest Forth compilers that one can get. Besides this, it is free, and in active development. Therefore, if the solution for your problems pass through Forth, I can only recommend that you consider using SP-Forth.