Perfex CRM is an open-source customer relationship management software that provides a set of powerful tools for managing businesses' contacts, deals, invoices, and projects. It offers a highly customizable platform designed to be easy to install, configure, and extend.
AmoCRM is a cloud-based customer relationship management software designed to help businesses manage their sales and customer interactions. It offers a wide range of features, including sales automation, lead management, customer behavioral tracking, and analytics.