Bluebeep was written in pascal and IIRC it had a really impressive content management system in there.
I was inspired by it to write a UK-centric redboxing program on the Psion organiser. I can't remember what language psions used. It worked though, through a mix of tone generation and a little social engineering you could get free calls from payphones in the UK. I remember working really hard to figure out how to convert from the Mhz figure I needed to produce into whatever input the psion's sound API took. Fun times.
I was inspired by it to write a UK-centric redboxing program on the Psion organiser. I can't remember what language psions used. It worked though, through a mix of tone generation and a little social engineering you could get free calls from payphones in the UK. I remember working really hard to figure out how to convert from the Mhz figure I needed to produce into whatever input the psion's sound API took. Fun times.