I still have one. I do my calculus-beginner Math with Macsyma (it's almost the same as the current Maxima written with Common Lisp, the syntax it's the literal

I still have one. I do my calculus-beginner Math with Macsyma (it's almost the same as the current Maxima written with Common Lisp, the syntax it's the literal same and anyone who launched it under a Linux distro/BSD will be at home) under an emulated PDP-10 ITS (VT52 terminal, 100x32, simulated with XTerm) and I code under MacLisp which is incredibily featureful. I plan to write a Gopher client either under MacLisp with a TCP library or Midas (PDP10 assembler). Why? Because it's wonderful and Gopher has lots of services: gopher://magical.fish has a translator, a newsfeed source, links to a Hacker News bridge, Reddit (read only, but you can grok the news and the comments), blogs, weather, and even some IF over Gopher, such as Spider and Web..