Zimbra Desktop is an offline client that lets you manage various email accounts in one desktop tool. Developed by Zimbra
License: Free Personal
Konqueror is a free and open-source web browser and file manager that provides file viewer functionality for file systems such as local files, files on a remote FTP server and files in a disk image. It is a core part of the KDE Software Compilation. Developed by The KDE Team
License: Open Source
Zimbra Desktop is primarily an email client that offers integrated calendar and contact management, making it suitable for users looking for a comprehensive communication tool. In contrast, Konqueror is a versatile file manager and web browser, ideal for users seeking a powerful tool for managing files and browsing the web, although it may not be the best choice for email management.