- Midwest Earth Builders
- Auroville Earth Institute; also see our internal page at http://opensourceecology.org/wiki/Auroville_Earth_Institute
- Gracomaq (website expired)
- TerraCrua (website expired)
- Fernco Metal -  - fabricate metal shears? These are called iron workers - punching, shearing, etc. Their manual machine is $1292. For the automatic one - 'With 2 guys working, and all is prepared - you can make 1 brick per minute'. Prices start at $4500 for 1 block per minute hydraulic machines with a 12 hp engine.
- DwellEarth CEBs
- Earthco Building Systems - (website expired but product may still be available). Was: "Earthco Megablock" - very interesting concept, producing very large blocks (weight ~1 MT). CEO is on LinkedIn: https://www.linkedin.com/in/larry-williamson-155b6311 ; see page: Earthco Megablock