Websites to Command line

BackupPC is a robust and free disk-to-disk backup software application designed for enterprise-level use, featuring a web-based interface. It supports a wide range of client operating systems via standard protocols, eliminating the need for client-side software installation. Ideal for Linux/UNIX environments.

Kolab Community is a comprehensive, free, and open-source groupware suite designed for collaborative work. It provides integrated email, calendar, contacts, and tasks functionalities, empowering individuals and teams to communicate and manage their data efficiently and with a strong focus on data privacy.