- ARC/INFO + AML
- ArcView + Avenue
- gcc
- gdb
- make
- sh
- awk
- ProjectBuilder
- InterfaceBuilder
- Word
- SPSS
- ORACLE (SQL)
- Mathematica
- NeXTStep/OpenStep
- Openwin/Solaris
- UNIX
- RiscOS
- Windows95
- e-mail
- Internet-Tools (www, ftp, archie, gopher)
- C
- Objective-C
- HTML
- Java
- Modula 2