PHP Point Of Sale - Point of Sale software
uniCenta oPOS - Award winning Point Of Sale
Floreant POS - Floreant POS :: Open Source Point of Sale – Think POS Think Floreant
ERPLY - ERPLY.com is a web based affordable point of sale software and inventory system.
Lightspeed - retail and restaurant point-of-sale, ecommerce, and omnichannel solution
Img.vision - Image hosting & video hosting for eCommerce sellers