Okay, I had to search forever to find it – even after installing it on one machine. Hope this doesn’t happen again.
Incremental search for IE7. The company that makes it calls it "inline search" – but their a french company and I think someone messed up the translation. I’ve always seen the feature referred to as "incremental" search. Say you want to find "jack" on the web page you are looking at. The old way was you press ctrl+F and then type "jack" and it finds the first occurrence of "jack". After you install this add-on, you press ctrl+F and then type "j" and it finds the first occurrence of "j" on the page. Then you type "a" and it finds the first occurrence of "ja" on the page. Then you type "d", because you have clumsy fingers or whatever, and it turns red because there is no "jad" on the page. So you press backspace and then type "c" and it find "jac" on the page, which also happens to be the first occurrence of "jack" on the page. Very useful – a much better way to search. If you have IE7, download this and use it.
iespell is also supposed to be good, but I haven’t used it much yet.