SkySat-3 to 21 (SkySat C1 to C19) are commercial Earth observation satellites by Skybox Imaging, licensed to collect high resolution panchromatic and multispectral images of the earth. The satellites operate in a polar inclined, circular orbit at approximately 450 km above the earth.

Skybox becomes only the fifth organization licensed to provide high resolution space-based imagery of Earth.

The Flock earth observing constellation built and operated by Planet Labs (formerly Cosmogia Inc.) consists of numerous triple CubeSats. The Flock-1 and Flock-1b constellations consist of each 28 satellites in medium inclination orbits. The Flock-1c constellation features 11 satellites in longer lived polar orbits.

The majority of the satellites featured a standard RGB imaging system, but five satellites were fitted with experimental systems working in different optical spectral bands.