Workspace
A Workspace is a simple editor for entering and executing JavaScript on a content window. Enter some text, select what you want to run and pick Execute from the context menu to evaluate it against the currently-active tab in a browser window.
AMO: https://addons.mozilla.org/en-US/firefox/addon/workspace/ – Preferred installation method, auto-updates enabled.
Source:https://github.com/robcee/workspace
Download: http://antennasoft.net/addons/workspace.xpi – not really updated regularly, may contain funky versions. You should use AMO!
Todo
Lots. This is a prototype.
comments on the original blog post.
