Phantomas : PhantomJS-based web performance metrics collector and monitoring tool
Seashells : Seashells lets you pipe output from command-line programs to the web in real-time, even without installing any new software on your machine. You can u...
Web Developer : The Web Developer extension adds various web developer tools to a browser. The extension is available for Chrome, Firefox and Opera, and will run on a...
HyperTerm : A terminal built on web technologies : JS / HTML / CSS
ADR Tools : A command-line tool for working with Architecture Decision Records (ADRs).
Nativefier is a command line tool that allows you to easily create a desktop application for any web site with succinct and minimal configuration. Apps are wrapped by Electron in an OS executable (.app, .exe, etc.) for use on Windows, OSX and Linux.