• Carmel Software - HVAC & Life Cycle Software
• Elite Software - software developer for HVAC, electrical, plumbing, and fire protection design.
• Environmental Support Solutions - ESS produces several refrigerant and HVAC related software. Site contains Freeware!
• Freedman's Quick Quote™ - HVAC proposal software
• www.paulmsoft.com - HVAC software for Palm OS devices. With constant development of new applications the PaulmSoft line has grown to seven HVAC applications