- QMS is the proven market leader in providing technology solutions to the dialysis marketplace.
- Headquarters: Emeryville, CA
- Constellation HomeBuilder Systems provides home building software and website solutions in North America.
- Headquarters: Markham, Canada
- The acquisition of Quantitative Medical Systems provides Constellation Homebuilders Systems with a new vertical market to apply its proven best practices.
- Constellation HomeBuilder Systems (CHS) is a wholly-owned subsidiary of publicly-traded Constellation Software Inc.