Webmin is a web-based system configuration tool for Unix-like systems, although recent versions can also be installed and run on Windows.
code-server is VS Code running on a remote server, accessible through the browser.
Portainer is a simple management solution for Docker. Easily manage your Docker hosts and Docker Swarm clusters via Portainer web user interface.
Syncthing is a free, open-source peer-to-peer file synchronization application. It can sync files between devices on a local network, or between remote devices over the Internet.