Databases/RDBMs

MS SQL Server
MySql
Oracle
Sybase
Microsoft Access

Operating Systems/Platforms

MS Windows 95 / 98 / NT / 2000 / XP
Linux

Multimedia development

Macromedia Flash 8.0 (with extensive use of action scripting)
Adobe Photoshop
Macromedia Director
Macromedia Fireworks
Macromedia Dreamweaver