The web has evolved. Security issues in java and flash led to their removal from the web, which has meant a lot of applets created in java and flash no longer work. Scalable Vector Graphics (SVG) and Javascript are a poor replacement. But it can be powerful.
This site will evolve. The future is promised to no one. But at present it will center around SVG and Javascript, with an emphasis on engineering and maybe a little of falstad.
Logic will get you from A to B. Imagination will take you everywhere.
Conventional Current vs Electron Flow
Electrical Conduction in Copper
Resistor Color Code Calculator / Tester - 4 Band
Resistor Color Code Calculator / Tester - 5 Band
Ohm's Law and Power Calculator
Simple Series/Parallel Circuit
Laws and Theorems of Boolean Algebra
Adobe fillable form: 5-variable Karnaugh Map