Infusion Systems
Makers of the I-CubeX MIDI sensor control interface

Controller Zone
The controller page at Synth Zone

Chordboard
CX10 Keyboard Controller sends out preprogrammed chords similar to "one touch" chords on a Casio Tone

Starr Labs
Controllers including guitars, digital fingerboards, MIDI percussion, and other unusual MIDI instruments.

IBK
Knob-based MIDI controllers for hard or software synthesizers

Body Synth
Uses muscle movements to trigger MIDI events. It can be attached to any set of muscles.

Buchla and Associates
Makers of the Lightning II and Marimba Lumina controllers.

Gulbransen, Inc.
Makes products which add MIDI capabilities to acoustic pianos.

Axon
Neural-net based MIDI controllers for guitar and bass

Wave Idea
Makers of the Bitstream Pro universal MIDI controller and providers of schematics and kits

Optimusic Light to MIDI controller
Creates note on and off messages depending on where light beams are broken

STEIM
Center for research and development of instruments and tools for performers in the electronic performance arts.

Rubicon Systems
Makers of hardware and software to turn a Palm Pilot into a MIDI controller

The Soundbeam Project
A device which senses movements by people standing nearby and converts them into MIDI

MIDI Solutions Inc.
Manufacturer of MIDI processing products.

Tactex Controls Inc.
Makers of multi-touch, pressure sensitive input devices

Kenton Electronics
UK specialists in MIDI to Control Voltage conversion and MIDI control

Digital Dance System
Sensor system designed by DIEM (Danish Institute of Electroacoustic Music)

Buchla Lightning II
Specialized MIDI controller that senses the position and movement of handheld wands and transforms this information to MIDI signals.

MTC Express
Multi-touch controllers with patent-protected, pressure sensitive, smart fabric.

Toward an Understanding of Musical Gesture: Mapping Expressive Intention with the Digital Baton
A look at gestural devices as controllers for electronic sound creation

Marimba Lumina
Electronic MIDI controller. Includes a traditionally arrayed set of electronic bars and some (not so traditional) trigger pads and strips (reminiscent of early ribbon controllers).

STEIM products: Sensorlab
Small, general purpose, analog to MIDI interface for the prototyping of musical instruments and interactive control systems.