Shodan is a search engine that specializes in returning results for public facing devices on the Internet. The CLI tool allows you to make requests using an API to obtain results without using the Web UI.
com is a TOPS-20ish TALK (aka LINK) for UNIX. It basically links multiple TTYs together, though differently than in ITS or TOPS-20. It supports multiple public/private rooms, chat logging and automated cleanup.com runs on SDF.org