WEB base POS system

I am in need of a WEB based POS system for my retail store. The system should have the following features:

- Inventory Management
- Product Selling
- Add Product
- Add Customers
- Add Suppliers
- Sales Reporting
- Product Reporting
- Employee Management
- Purchases list

Specially Implement for Selling And Production Companies

- Production
- Sub- Contractors
- Production Reporting
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Additionally, I require specific integrations with Accounting Software. Ideal skills and experience for this job include:

- Experience with WEB based POS systems
- Knowledge of Inventory Management
- Understanding of Accounting Software integrations
- Familiarity with retail store operations and Production Lines