The Middle English Mouse Dictionary is a prototype browser extension for Firefox that assists in reading middle english web pages by showing dictionary information about middle english words when they are highlighted or double-clicked. It tracks which words you add to your personal word list for each tab, and displays them in a sidebar, which can be opened from the right-click context menu.
Install the extension here.
At present this is a prototype, written in pure JS to be as simple as possible. In time we intend to: