Build a business management program

Job ID: 31376574

Budget: $250 – $750 AUD

I need a program or database (with UI so its simple and looks nice). This program needs to do the following.

Keep client details and documents, also I need a bit to record payments, but don't need to record invoices or anything. I need this displayed nicely.

I need a section on the client page that shows certain documents, I also need the system to warn me if the customer has exceed limits for purchases that week.

I am looking for a system that does everything my employees need to, if it could include API that would be an advantage.
Related categories: Mac OS CRM MySQL Database Design