Keap is a web-based customer relationship management (CRM) and marketing automation platform designed for small businesses. It offers features such as lead capture, email marketing campaigns, appointment scheduling, and e-commerce integrations.
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.