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 suite focused on email, contacts, and task management, making it ideal for users who prioritize privacy and customization. In contrast, Airmail excels in email handling with a sleek interface and robust third-party integrations, appealing to users who want a fast and visually appealing email client.