Square - Square helps millions of sellers run their business-from secure credit card processing to point of sale solutions. Get paid faster with Square. Sign up today!
myOpenLab - MyOpenLab is a platform for finished elements (program components) that can be linked together.
Lightspeed - retail and restaurant point-of-sale, ecommerce, and omnichannel solution
PyLab_Works - PyLab_Works is a free and open source replacement for LabView + MatLab, written in pure Python.
QuickBooksPOS - QuickBooksPOS offer POS system software for small businesses.
LabVIEW - LabVIEW offers many of the functions you'd find in a traditional script-based programming language presented in a more intuitive visual interface ideal fo engineering.