Phil Windley makes his own amendments to a list of great software.
As Phil believes, I also have to include Smalltalk on the list. I don't agree with the original author's rationale re: Java and some others on that list.
Other systems I'd consider for my top ten...
- Lisp (esp. Lisp 1.5, Common Lisp, and Scheme)
- Emacs (in various incarnations)
- The Xerox Alto (incl. BitBlt, Ethernet, laser printing, WYSIWYG, etc.)
- Englebart's Augment, nee NLS
- The Web
- The Orbit compiler for Scheme