I want to mention that even the free version is quite rich in features and options; I can work with leads, contacts, and simple sales funnels. The self-hosted nature also offer me the feeling of security that all my data is store on my own server.
Firstly, I have found that PHP CRM offers an astonishing number of features for incorporation into a development project. It appears as a dream tool for a small business on the limited budget of owning a business as this program unites all the key aspects of the customer management in one place.