Streak
If your company depends on Gmail and needs CRM, Streak is the best CRM system for you. The application works within your web browser and inside Gmail to support sales, product development, fund raising, real estate and other applications. Streak includes power tools such as view tracking, mail merge, snooze, send later, snippets and thread splitters. The mission of Streak is to empower you to run your entire company from your Gmail inbox. Features included with Streak include simple collaboration and compatibility with other Google apps. Streak also supports multi purpose environments by equipping teams to manage deals, support queues and other functions from within Streak. In fact, the ability to use Streak to replace multiple external systems continues to attract the attention of clients and industry watchers. You don't need to have an IT staff to help you implement Streak CRM because you can install it yourself.