• Open Source apps
  • Fantasy Consoles and emulators
    • TIC-80 - Runs on Windows, Linux, Mac OS X, Android, Raspberry PI
  • Maps
    • Organic Maps - Runs on Android
• Electrical / Electronics
  • sci.electronics.repair FAQ - I fondly remember my days, pouring through this, in an attempt to repair my CRT monitor.
• Programming
  • Assembly Language
    • Understanding Windows x64 Assembly
    • Learn Assembly Language - x86 (32-bit) assembly language on Linux
  • Rust
    • Rustlings - Small exercises in Rust
  • What Every Programmer Should Know About Memory
  • Tumble Forth
  • OSDev wiki
• DIY
  • Simplifier
  • Oriparts - Car parts catalog with part numbers
  • i10 Forum
  • Concrete lathe
  • Passive cooling
• Mathematics
  • Tom Körner's Home Page
• K-12
  • Indian Computing Olympiad
• Online Shopping
  • Tools Direct