Useful Firefox extensions

There are quite a few Firefox extensions which are extremely useful. Here are a few I use:

Title	Description
Xinha WYSIWYG editor	Provides a WYSIWYG editor to create HTML in any input field. This is useful when editing a wiki or blog which supports HTML but does not provide a WYSIWYG editor. Or even in the case of Blogger which does provide an WYSIWYG view but does not provide table functions, you can use Xinha to create tables.
Internet Explorer Link	If you need to view specific web pages in Internet Explorer, this extension will provide a right-click context menu to open the link in Internet Explorer. The alternative is to copy the link, open Internet Explorer, and then paste the link in the address field.
Firefox Keyword	Not a Firefox extension, but I use this function of Firefox a lot. If you right-click on an input field, you can define a keyword for that field. Then in the address field, you can type the keyword name plus the data you would like to put in the input field which corresponds to that field. As an example, I can create a keyword "google" for the Google search input field. Then if I type "google search-term" in the address field, it will automatically behave as if I had gone to http://www.google.com and entered the search term in the input field and pressed Enter.

By the way, in case of using Xinha for creating tables for my blog, I have my Blogger setting to automatically assume a line break for each new line, and Xinha tries to make the HTML look nice in tables, but Blogger interprets the nice formatting as extra line breaks, so after creating the table, I've had to delete all the excess line breaks.