I remember seeing a demo of PDB at the British Telecom Software Engineering Centre at Glasgow running on a Sun workstation around 1993. I contacted Arthur van

I remember seeing a demo of PDB at the British Telecom Software Engineering Centre at Glasgow running on a Sun workstation around 1993. I contacted Arthur van Hoff (who went on to Java fame) a few years ago and he put me in touch with Tim Niblett who still has some source code, but if I recall correctly, didn't feel that he had the authority to release it. https://twitter.com/avh/status/62644685486825473 https://twitter.com/avh/status/62644685486825473 I believe that PDB came out of the Turing Institute https://en.wikipedia.org/wiki/Turing_Institute https://en.wikipedia.org/wiki/Turing_Institute which sadly closed in 1994. It would be great to resurrect it, but we only seem to have the binaries.