• Duplicati: A backup software that securely stores and restores data across various platforms and cloud services. Supports encryption and incremental backups (versioning). Lots of possibilities, but use it to back up my PC to my NAS and the other way around.

• Ferdium: Messaging and other services combined in a single interface. Using it for Telegram, Whatsapp and services like Home Assistant etc. Allows apps to hibernate when not in use.

• OpenRGB: Control and customize RGB lighting effects on various computer hardware components.

• Firefox

Agree, but Mp3tag isn't open-source.