EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries, etc. Developed by EssentialPIM
License: Freemium
EssentialPIM is a personal information manager that excels in task management and note-taking, while Zimbra Desktop is an open-source email client that integrates email, calendar, and tasks but may be more complex for some users.