| Chirped laser Geophone for Geothermal Boreholes | Avalon | Houston, Texas |
| GE MEMS Downhole Geophone | GE | Niskayuna, New York |
| Geophotonics: Optical MEMS & Geothermal Seismology | GeoPhotonics | Houston, Texas |
| The GeoSense Solution | Intelligent Fiber Optic Systems Inc. | San Jose, California |
| Geothermal 3-Axis Accelerometer Microseismic Tool | Harold Snyder's team | Rockwall, Texas |
| High-Temperature LVDT-based Geophone | OzIC High-Temperature Seismology | Fayetteville, Arkansas |
| NXTANT | NXTANT | Rancho Palos Verdes, California |
| Photonic Seismometer for Geothermal Applications | PSG | Dallas, Texas |
| ThermaView Optical Seismic for Smart Geothermal | MagiQ Technologies, Inc. | Somerville, Massachusetts |
| Ultra-High Temperature Seismic Tool | Ultra-High Temperature Seismic Tool | Dublin, Ohio |