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 a comprehensive open-source personal information manager that offers deep integration with other KDE applications, making it ideal for users looking for customizable solutions. In contrast, Google Calendar excels in user-friendly design and collaboration, benefiting those who are already embedded in the Google ecosystem.