ABC Shortcuts: 26 alphabetical buttons for groups of bookmarks and grouped site history. Free.
AddaButton: Add custom buttons to the IE standard buttons toolbar. Buttons added can launch any program. Free. Packaged with adware.
Allmyfavorites: Add current page to an online favorites list. Requires registration with email. Free.
BrandBar: Company which creates customized toolbars. Commercial service.
Browser Buddy: Three utilities. A keywords highlighter, a selection highlighter and a text magnifier to zoom selected text. Free.
CrispyPix: Context menu item starts an option screens allowing adjustment of brightness, contrast, sharpness and zoom on a single image displayed using IE. Trial.
DebugBar: Make screenshots and send them by email. Show DOM tree, CSS stylesheet, javascript code and HTTP headers. Javascript debugger. Trial requires email registration.
Easy Bee: Record macros to automate tedious Web navigation tasks and build aggregated pages. Trial.
febooti ieZoom: Zoom functions, color picker for page creation, window size presets, custom skins, shortcuts and layout. Trial.
Hot Lingo: Check spelling of anything you type in a web page form. Trial.
IEInspector - DOM Inspector: Inspect and edit the Document Object Model (DOM) of any web document. Trial.
Incredi IE Manager: Popup blocker. Spelling check. Window maximizer. Free.
Kyb IE GetEmAll: Grabs selected links and creates a list to browse offline later. Trial.
MadCool's Toolbar: Popup stopper. Automatic history & cache cleaner. Page translator. Free.
My Favorites: Launch favourites or a group of favourites from an icon in the tray. Purchase option only (no trial).
MyDealShopper Toolbar: Lists special offers from specific sites based on contents page displayed. Free.
Picture Tools: Adds two buttons on IE's buttons toolbar which browse or download all pictures from a page. Free.
Popup Ad Filter: Popup killer. Trial.
Quero Toolbar: Replacement address bar with search features. Flash and Pop-Up Blocker. Free.
Save Page IE Shortcut Keys: Save single page and keep options used. Grab and navigate pages using shortcut keys from Internet Explorer. Free.
Searchy: Use an abbreviation in the address bar to search directly in a search engine. Adds registry entries. Free.
Semantic Web Project's Annotation System: Attach comments, explanations, questions, references or any other type of remark to a web page. Open source.
ThumbBot: Display page with zoomable thumbnails of all pictures on a site. Single toolbar button. Free.
TrueWallet: Automated form filler and password saver. Free
Visual Web Collector: Keep collections of web pages using a carousel system that displays collected web pages as thumbnail images. Trial.
WinThemes Toolbars: Streaming media, search, news and screenshot toolBars from maker of active desktop software, WinThemes. Free.
Yet Another Tool Bar: Toolbar allowing searches on search engines, amazon, ebay, etc. Free.