Sigma is a construction cost estimate solution that gives you the power to generate cost-estimates in a spreadsheet-like program, that offers key features and capabilities of object driven estimating.
The best part about this software has been its ability for quick calculations when it comes time for our clients or subcontractors needs as well as keeping track with all their submittals/change orders etc.. Nothing really! I would say if they could make some changes here & there (it's not very user friendly) but overall great product!! You can't go wrong purchasing any sigma products from them especially because we have used so many different ones over past years including other competitors…
Pros
Easy interface
Wide variety in estimating capabilities
Many types available suchas Linear, Cost Plus Fee , Time And Material