Unregistry is a lightweight container image registry that stores and serves images directly from your Docker daemon's storage. The included docker pussh command (extra 's' for SSH) lets you push images straight to remote Docker servers over SSH. It transfers only the missing layers, making it fast and efficient.
Rdfind is a command line tool that finds duplicate files. It is useful for compressing backup directories or just finding duplicate files. It compares files based on their content, NOT on their file names.
Rybbit is the modern open source and privacy friendly alternative to Google Analytics. It takes only a couple minutes to setup and is super intuitive to use.