Programming languages:
C, C++, Basic, Perl, Lisp, Prolog, Python, C# and Java.

Operating Systems:
DOS, Windows 3.X, 95, 98, NT, 2000, XP, Linux, Solaris and Lynx

Firmware Developing Packages:
8086 8051 & 8085 Assemblers, Dunfiled C compiler, Debuggers, Emulators and MicroIDE.

Robotic platforms:
Mobility on Magellan Pro, LejOS and  BrickOS on RCX and interactive C on Handyboard

Hardware design:
Eagle, Protel

Graphic/CAD Packages:
Adobe Photoshop, CorelDraw, Animator Professional, 3DMax, AutoCAD, Adobe ImageReady, Gif Animator, Adobe Primmer, Macromedia Flash and Elastic Reality

Database Applications:
Microsoft Access, Microsoft SQL Server 7.0, MySQL

Compilers:
GW Basic, QBasic, Quick Basic 4.5, Quick Basic 7, Visual Basic 1, Visual Basic 4, Visual Basic 5, Visual Basic 6, Visual Basic .NET, C# .Net
Turbo C 1, Turbo C++ 1, Turbo C++ 3, Borland C++ 6, Visual C++ 5 Visual C++ .NET,  Watcom C++9, Watcom C++ 10
Perl 5.6, Turbo Prolog, Strawberry Prolog, LispWorks, Dunfiled C, GC and GCC

Other Packages that I like
Sourcer, Norton DiskEdit, DeCafe, Nmap and ImageMagick