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Open Source Point of Sale is a web based point of sale application written in PHP using CodeIgniter framework. It uses MySQL as the data back end and has a Bootstrap 3 based user interface.
opensourceposFusionInventory plugin for GLPI
fusioninventoryMaking an Awesome Inventory Management Application with Barcode Reader in PHP and MySQL from Start to Finish
phpcontrols:department_store: Point-of-sale and inventory tracking for small-scale retail stores. Easily manage inventory, purchases, sales, and damaged and/or expired products.
chrisidakwoOpen source inventory management system with php and mysql Invoice generation and easy to download invoice in PDF format Lightweight and easy to use Order management and product management can be done
stemwordPart-DB is an Open source inventory management system for your electronic components
Part-DB