Vtiger
There are a few different CRM software programs that are available on the market, but none of them are able to offer everything that Vtiger does. Currently, due to its excellent features and results, it is actually considered to be the best open source CRM software program available. Some of the things that Vtiger was designed in order to do are improve marketing ROI, deliver excellent customer service, and grow sales. It is considered to be an all in one software program, and there are many categories that it is able to help with. For instance, when it comes to marketing & sales, there are four areas that it helps with: reporting, contacts, opportunities, and automation. However, it can also help with customer support in the following areas: insights, cases, SLAs & escalations, and customer portals. Last but not least, it helps with a number of other things, which include sales & support, projects, inventory, and custom modules.