Central Washington University - Measurements of tectonic plate motion using GPS in the Pacific Northwest. Includes information about PANGA, the Pacific Northwest Geodetic Array collaborative project.
GPS Time Series - Measurements made with the Global Positioning System are sensitive enough to detect motion of the Earth's tectonic plates.
UNAVCO Facility: Plate Motion Calculator - Programme designed to calculate tectonic plate motion at any location on Earth using one or more plate motion models.
World Stress Map Project - World Stress Map (WSM) is the global repository for contemporary tectonic stress data from the Earth's crust.