SpeedCrunch - SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .

Procore - Procore is the world's most widely used construction project management software. Easy to use, mobile platform with unlimited user licenses.

Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.

PlanGrid - The #1 construction app. Used by thousands of companies to save time, money, and ditch paper plans forever.

Numi App - Numi is a beautiful text calculator for Mac.

Corecon - Corecon offers integrated estimating, project management, and job costing for small to medium-sized construction companies.