Get the Add-ons

The following are stable add-ons (virtually all freeware) that work well with Internet Explorer 7 and 8.

IEToys - A small suite of powerful add-ons for simple tasks like ad removal, dictionary and encyclopedia lookups, etc.

Mouse Gestures - Mouse gestures allow you to use the right-mouse button + movement to trigger complicated actions.  For instance, you could define UP + RIGHT to mean "Open in background tab".  Or DOWN + RIGHT to mean "Close this page". 

The new "Scripting" feature allows you to hook gestures up to custom scripts; I've configured double-right-click to remove unwanted content like images & Flash. Right-click on this link RemoveImages.js and use Save Target As... to store it as C:\RemoveImages.js. Then, configure the double-right-click gesture to launch the script:

LeechGet - A powerful download manager which allows you to queue/pause/resume downloads.

IESpell - Click a toolbar button to spell-check your blog postings, emails, etc, before you post them.

Three nice choices for Search

1> Inline Search toolbar hooks the CTRL+F hotkey and enables a great find-on-page experience. 

2> Find as you type - Another toolbar that hooks CTRL+F.  This one includes an 64-bit version, and full C++ source code is available.

3> HandyKeys is a neat little applet that works across windows to enable incremental search in a number of applications (just hit CTRL+Space).  Its best feature is that you can just hit Enter to activate hyperlinks found incrementally.

For RSS Users

Feeds Plus offers notification of new feeds and an aggregated reading view.

Feed Folder offers a "Live Bookmarks" style view of feed items from your Favorites menu.

For Web Developers

See Web Developer add-ons.

Other Add-ons

Proxy Pick - Adds a button to your toolbar to quickly switch between proxy server configurations

The old IE5 PowerTweaks offer a way to add a site to the Trusted Zone or the Restricted Zone directly from the tools menu.