Author of ciforth (x86 16/32/64 , DEC Alpha, Renesas, 6809, stand alone). Co-author and maintainer of tForth (transputer Forth). Author of ciasdis (computer intelligence assembler disassembler). On my webstie you will find these and other GPL-ed programs, in particular Forth code number theoretical programs and background information about the Forth language. I'm consistently in the top ten solvers of the Netherlands for projecteuler.net (400+ problems solved). Retired and over 40 years experience in programming, real time control, technical calculations, simulation, microcomputers. Background in math, physics and electronics.