Kontact is a personal information manager and groupware software suite developed by KDE. It supports calendars, contacts, notes, to-do lists, news, and email. Developed by KDE
License: Open Source
Kontact is an open-source personal information manager with strong integration of email, calendar, and tasks, making it ideal for users looking for a comprehensive tool. Polymail, on the other hand, offers a modern interface with advanced email management features, suitable for users focused on productivity and collaboration.