OpenCRX is an open source Customer Relationship Management (CRM) software. It is an enterprise-level platform that helps with sales, marketing, and maintaining internal and external business records. It also provides features for role-based security and system-wide auditing. The OpenCRX architecture was designed for extension and customization. The core software and the interface API have a clean separation. This provides opportunities for targeted customization through API extensions. Because it is an open source solution, businesses can also obtain the source code and customize the core software. With J2EE 6 compliance and major database compatibility, it is cloud ready. Cloud readiness makes it scalable and portable. Due to the built-in JAVA API and RESTful API, OpenCRX is easy to integrate with other applications. It also comes with support for standards like IMAP, WebDAV, CalDAV, and CardDAV to allow smooth integration of emails, calendars, contacts, and documents. It is a powerful and comprehensive CRM platform that can handle the needs of both small and large businesses.