Institute of Piezomechanics
- Ultrasonic actuator and motor research in Kaunas, Lithuania from 1970. Multi degree of freedom motors for robotics.
- http://www.piezo.lt/index.htm

Cranfield University - Nanotechnology
- Piezoelectric materials, motors, microsystems (MEMS) and actuator design.
- http://www.cranfield.ac.uk/sims/materials/nanotech/research/active/

Flexmotor - Motors and Micromotors
- Innovative piezoelectric ultrasonic motor and micromotors for low cost, high volume manufacture for automotive, MEMS and consumer products. Low profile piezomotor and scalable to 2mm diameter.
- http://www.flexmotor.com

Cedrat Recherche
- Ultrasonic linear piezo motors, drives and actuators. Also dedicated piezo transducer software for motor design.
- http://www.cedrat-grenoble.fr

Piezoelectric Products
- EDO Ceramics Corp supplying transducers, actuator and a linear ultrasonic motor
- http://www.edoceramic.com

Surface Acoustic Wave Linear Motor
- SAW linear motors. Article describing the principle, experiment and conclusions and future reading.
- http://www.intellect.pe.u-tokyo.ac.jp/research/sawmotor/sawmotor_e.html

Ultrasonic Motors
- JPL's NDEAA Group work for space application of piezo devices up to year 2000 including commercially available motors.
- http://ndeaa.jpl.nasa.gov/nasa-nde/usm/usm-hp.htm

MicroPropulsion Corp (USA)
- Ultrasonic motors, piezoelectric transformers, miniature generators.
- http://www.micropropulsion.com/

Piezo Ceramic GmbH (Germany)
- Ultrasonic motor manufacturer. Also piezo ceramic, PZT transducers & actuators.
- http://www.piceramic.de