Need a CRM for a computer service, what are the options?

Question

CRM

Good afternoon, I need a CRM for a computer service.
You need:
1) OpenSource, with installation on your server.
2) Integration with ip-telephony (zadar-ma, mango)
3) Maintaining a customer database (name, phone, mail, address, order history)
4) Sending SMS, mail (integration with third-party mailing services)
5) Employees (courier , master, administrator)
6) Warehouse - goods (in stock, for sale)
7) warehouse - purchases (for repairs)
8) Projects (Creating a large task with the ability to add small tasks to it and assign it to employees)
And it is desirable that this is all it was intuitive

Answer 1

Already done on the basis of SalesMan CRM. Payment - according to the number of jobs. Additional modules are purchased separately (one-time).

Answer 2

jqueryvalidation.org

Answer 3

parsleyjs.org