
University of Maryland Global Land Cover Facility (GLCF) Web Site
This web site allows you to search for, request and download Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper (ETM) imagery bands for almost anywhere on planet Earth, free of charge! This data is perfect input for AlphaPixel's PixelSense product.
"Largest Free Source of Landsat Data in the World"
"...the best open source for Landsat TM and Landsat ETM on the planet..."

Landsat 7 ETM+ orthoimages, cloud-free (less than 10%) for Canada with high-quality (30-50m) registration accuracy. Available in TIFF format.

US Dept of Agriculture NRCS Data Depot
This web site allows you to search for, request and download a variety of data, including Color Infrared (CIR) DOQQ mosaics for a variety of counties in the US, free of charge! This data intended to be used with for AlphaPixel's PixelSense CIR product. Data is provided in proprietary MrSID format and must be converted to GeoTIFF for use in PixelSense CIR.
State and Regional sites:
Arkansas, Delaware, Florida, Indiana, Hawaii, Iowa, Michigan, Minnesota, Mississippi, Missouri, Montana (partial), North & South Dakota, New Jersey, New York, North Carolina 1, North Carolina 2, Oregon (coming soon), South Carolina, Texas, West Virginia 1, West Virginia 2, Wyoming (coming soon)
Data is provided in a variety of formats, and may require conversion to GeoTIFF for use in PixelSense CIR. Some sites may require a little bit of digging to access data, and may provide only partial coverage for the specified region.

Co-founded by the founders of AlphaPixel, 3D Nature creates and publishes Visual Nature Studio, the industry-leading photorealistic GIS terrain visualization software. Visual Nature Studio is the perfect tool for visualizing terrain data combined with natural-color georeferenced Landsat imagery produced by AlphaPixel's PixelSense product.
"What is unique about VNS aside from the ability to create excellent photo-realistic visualization is that this product is designed with GIS people in mind."