Vtiger
Vtiger is one of the most popular CRM applications in the world. The system is currently used by over 100,000 organizations from all over the world. The simplicity and well-polished design of the user interface ensures that the system will be loved by your sales and customer support teams. With Vtiger, your company will have all the necessary tools to sell, market and provide excellent customer support. The system is always being updated to ensure that it's stable and reliable, as well as to improve its versatility by adding new features. Vtiger also has integrations with many of the world's most commonly used business applications and services, such as PayPal, QuickBooks, Twilio, Dropbox, Google Docs and many others. As a fully online and cloud-based system, the Vtiger CRM application can be accessed from any Internet-enabled device. Mobile apps for iOS and Android-based devices are available as well.