A simple CRM system to install on a web server

Question

CRM

Please tell me a solid and simple system for managing clients.

A couple of users will maintain a customer database:
contact details;
the services they provide;
interaction history.

It is quite good if you can keep progress on payments.

Today's fashionable SaaS is categorically not suitable - you need a system to install on your server.

Answer 1

Managers once gave me this link: http://www.sugarcrm.com and said - put it on. I put.
It is simple (both to install and use), seems to suit your requirements (I only saw the interface during installation and during the installation of plugins), and, you guessed it, supports plugins.

Answer 2

I recommend paying attention to TeamLab. There is a CRM module.
Open-source, user-friendly, well-designed.

Answer 3

vtiger crm - An analogue of Sugar SRM with some additions. I recommend visiting - community.salesplatform.ru/