Dolibarr ERP/CRM is a software built by modules addition (you enable only features you need), to manage small or medium companies, freelancers or foundations. We can say Dolibarr is an ERP or CRM (or both depending on activated modules).
It's an OpenSource project base on a WAMP, MAMP or LAMP server (Apache, MySQL, PHP for all Operating Systems). Dolibarr differs from other ERP or CRM softwares (like OpenAguila, OpenBravo, OpenERP, Neogia, Compiere, etc) because everything was made to be more simple:
* Simple to install
* Simple to use
* Simple to develop
Note that Dolibarr is also available with an auto-installer for Windows users with no technical knowledge to install Dolibarr and all its prerequisites (Apache, Mysql, PHP) with just one auto-exe file. This version is called DoliWamp.