Free EE Design Software for Windows

• No Touch Example
• Active Filter Design for Matlab (v 1.2 orders 1-8 and its associate manual (400kB) - now works with Unix also (thanks to Ion Tesu).  Type AFD to run
• Resistor Color Coding (250kB)
• PSpice 9.1 (free academic version) (27MB)
• 555 Timer Design (monostable, astable, duty cycle <, =, > 50%) (500kB)
• Antenna Design 
• NuHertz Filter Free filter design (passive, active, digital, TL, order 1-3 only) (5.5MB)
• WinProb interactive graphical probabilty calculator (Normal, Student T, F, Chi-Square and more) (2.7MB)
• Complex S-plane System Transfer Function Explorer (drag around poles and zeros to create any system and observe it's time and frequency response) (250kB)