Dokio

Dokio is a free and open source program to help small businesses with sales and services. It has a web interface and works from any modern browser.
Manage your customers, sales and finances. Have access to full analytics of your business. Create products, register sales, store contacts of counterparties, control payments and trade efficiency.
Maintaining customer orders, the ability to reserve goods, automatic removal of reserves when selling.
Monitoring of sales volumes of each department or employee by goods or categories of goods for any period of time.
Control of in-stock balances in real-time mode, the ability to set minimal balances for each warehouse.
Differentiation of users by roles - you can give your employees only the access rights according to their work.
The system can store any type of files. Files can be sorted by categories, used internally or shared for external access.