This Chrome browser extension organizes the Games the way you want for your laptop or tablet.

FORBES: The Best Apps For The London 2012 Olympics

EWallet is a small browser extension that you "carry" as you move from one Web site to another on your shopping spree.

CNN: Don't forget your eWallet when you shop online

The desktop browser extension largely stays out of your way until you need it, although we're surprised the social sharing elements are left out.

ENGADGET: Yahoo Axis on desktop, iOS unifies your bookmarks, makes the web visual (hands-on)

Announced over the weekend, encrypted chat service Cryptocat will soon be accessible only by downloading a local browser extension for Mozilla Firefox and Google Chrome.

FORBES: Cryptocat Increases Security In Move Away From JavaScript Web Delivery

InboxQ is a browser extension (for Firefox and Chrome).

FORBES: InboxQ: Snagging Customer Leads from Twitter

Yahoo's hoping to hit the proverbial two birds tonight with Axis, which combines a desktop web browser extension (your choice of Chrome, Firefox or Safari) with a mobile app on the iPad and iPhone.

ENGADGET: Yahoo Axis on desktop, iOS unifies your bookmarks, makes the web visual (hands-on)

According to a November 3rd interview with CEO, Matthew Bellows, Yesware offers a browser extension to Google (GOOG) Gmail that lets sales people report on their activity very efficiently and accurately and streamlines their email communication.

FORBES: Yesware Boosts Sales Productivity, Financial Forecasts

Downloadify, an extension to Google's Chrome browser, enabled users to download MP3 files by exploiting a vulnerability in Spotify's web player.

BBC: Spotify rushes to fix free download vulnerability

Stumbleupon was originally written as a Firefox extension, a toolbar you could put in your browser to help you find and share Web sites.

FORBES: Web Warrior