• General
  • Stem Chart – helps you visualize your current stem and where a new stem might place your bars
  • Bike Stem Calculator – no visualization but handy nontheless
  • Bike-alog’s BikePedia – find out what components came on a bike. Goes back to 1993.
  • Rabbit, a singlespeed and fixed-gear cycling calculator – Java Applet
• Wheelbuilding
  • Free Bike Tools Spoke Calculator
  • WheelCalc – Windows Application
  • Spocalc – Excel Spreadsheet
  • Spoke Calculator — Comprehensive but doesn’t give you the ability to store your own rim and hub values
  • Spokulator
  • WheelBuilder.com — Wheel component weight database
• Weight Weenies — User-submitted weight database
• Construction
  • Bike CAD