Can be used to search for functions. Rated 4 out of 5 stars

Use it to search for functions that are added by other extensions.
For example, you want a function that opens a url in a new tab, then you can simply type "newtab" in the search field and press Enter, then browse the search field dropdown box, in which the items are the names of the functions that have "newtab" in their names.

This review is for a previous version of the add-on (0.1.1).