- Alps - Lots of hard to find electronics components.
- CUI Inc -
- Greatecs - Lots of different switches.
- http://www.usdigital.com - US Digital designs and manufactures optical encoders, inclinometers and motion control components. Their complete product line includes absolute and incremental optical encoders, inclinometers, stepper motors and drives, PC interfaces, digital displays, switching power supplies and flexible shaft couplings for motion control, factory automation and robotics.
- Portescap - Motors
- Servo2go - Motors