A contact manager is also known as an address book, customer relationship management (CRM) tool, personal information manager (PIM), or simply a contact list. These tools are designed to help individuals or businesses organize and keep track of their various contacts, including customers or clients, vendors, colleagues, and friends. Some other related terms also used include relationship management software, sales management software, and lead management software. Regardless of the name, the primary goal of these tools is to facilitate communication and improve relationships between individuals and organizations, making them an essential tool for many professionals and businesses today.