This list is pretty extensive, but the info is all top shelf, worthy of your attention.
Blogging:
- StumbleUpon
- StumbleUpon lets you "channelsurf" the best-reviewed sites on the
web. It is a collaborative surfing tool for browsing, reviewing and
sharing great sites with like-minded people. This helps you find
interesting webpages you wouldn't think to search for. - Clipmarks
- With Clipmarks, you can clip the best parts of web pages. Whether
it’s a paragraph, sentence, image or video, you can capture just the
pieces you want without having to bookmark the entire page. - Sage
- Sage is a lightweight RSS and Atom feed aggregator extension for
Mozilla Firefox. It's got a lot of what you need and not much of what
you don't. - Jeteye
- Jeteye is a unique Web-based application and service that is designed
for the next generation of enterprise and consumer use of the Web.
Jeteye changes how we interact with the web, in an era where
communication and social computing are more powerful than ever. - Performancing
- Performancing for Firefox is a full featured blog editor that sits
right in your Firefox browser and lets you post to your blog easily. You
can drag and drop formatted text from the page you happen to be
browsing, and take notes as well as post to your blog. - TorrentBar - BitTorrent File Search Toolbar for Firefox. Allows to search numerous sites in a matter of minutes for needed torrent files.
- Wizz RSS News Reader - A fairly good RSS and Atom news reader.
- MeasureIt - Draw out a ruler to get the pixel width and height of any elements on a webpage.
- Show MyIP
- Displays your current IP address. If you have a static IP (Internet
Protocol) address, this number will stay the same each time you visit.
If you have a dynamic IP, the number will change each time you log on to
the internet (or your ISP assigns a new IP). - NewsFox - RSS/Atom News Reader.
- FireFTP
- FireFTP is a free, secure, cross-platform FTP client for Mozilla
Firefox which provides easy and intuitive access to FTP servers. - IE Tab - IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox.
- Web Developer - Adds a menu and a toolbar with various web developer tools.
- Firebug
- Firebug integrates with Firefox to put a wealth of development tools
at your fingertips while you browse. You can edit, debug, and monitor
CSS, HTML, and JavaScript live in any web page. - Greasemonkey - Allows you to customize the way a webpage displays using small bits of JavaScript.
- Tab Mix Plus
- Tab Mix Plus enhances Firefox's tab browsing capabilities. It
includes such features as duplicating tabs, controlling tab focus, tab
clicking options, undo closed tabs and windows, plus much more. It also
includes a full-featured session manager with crash recovery that can
save and restore combinations of opened tabs and windows. - Image Zoom
- Easily zoom in, zoom out, fit image to screen or set custom zoom on
individual images within a web page. All this can be done by using the
context menu or a combination of mouse buttons and scroll wheel. Handy
to see the finer details of smaller pics or to make very large pics fit
within your screen. - ColorZilla - Advanced Eyedropper, ColorPicker, Page Zoomer and other colorful goodies.
- IE View
- Lets you load pages in IE with a single right-click, or mark certain
sites to *always* load in IE. Useful for incompatible pages, or
cross-browser testing. - iMacros - Automate your web browser. Record and replay repetitious work.