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!
Okular - Okular is a universal document viewer based developed by KDE.
Lightspeed - retail and restaurant point-of-sale, ecommerce, and omnichannel solution
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
QuickBooksPOS - QuickBooksPOS offer POS system software for small businesses.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.