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Firefox with Stylish or Greasemonkey: The talented designers who redesigned your Gmail are back with that similar look for Google Calendar. The Google Calendar Redesigned user style is now available...

Now that you know you can use HTML inside comments here at Lifehacker and other Gawker sites, a little help may be in order. If you're not used to writing HTML by hand, the Gawker Comments HTML...

(Via David’s blog)
David Cancel’s written a Greasemonkey script which alerts you to the various web beacons / tracking bugs used on the websites you visit.

All platforms running Firefox with Greasemonkey: Add a little color to your RSS feeds with the Google Reader Colorful List view script. This Greasemonkey user script turns each feed item a different...

Firefox with Greasemonkey: The Gmail Right Click Menu adds a custom right-click menu to your Gmail inbox to take you to common Gmail navigation points. Currently that includes most of the links in...

As per several readers' requests, I just updated the Gmail Always Show CC: user script (and its BCC sibling.) Now the scripts can show the CC or BCC fields using a key combination; and they work...

Gmail users with Firefox and Greasemonkey: If you often use the CC or BCC field in Gmail but you're sick of clicking on the "Add CC" and "Add BCC" link to do so, we've got a pair of user scripts for...

Firefox with Greasemonkey: The Google Inline MP3 Player Greasemonkey script inserts Google Reader's MP3 Flash player next to any linked MP3 file you stumble onto while browsing. Simply click the...

Firefox with Greasemonkey: The Gmail Addons Greasemonkey script embeds any page you specify inside Gmail's interface. By default, it comes with Google Calendar and the Google Talk gadget. (If this...

Firefox with Greasemonkey only: Two of the Lifehacker editors may reside on the West coast, but our site stats tell us that most of you are on Eastern time, and that means you'd probably like to see...

Firefox with Greasemonkey: The comment threads here at Lifehacker can get lengthy, and when you want to reply to a certain point someone made 12 comments up, it's not as easy and readable as it could...

Best Greasemonkey and Stylish scripts (both are Firefox extensions). How to modify the look of websites like gmail, google, google reader, last.fm, lyrics and other stuff to make youtube better and some other cool greasemonkey and stylish scripts.

Firefox with Greasemonkey: The FriendFeed by Service Greasemonkey script does just what it sounds like, filtering results in your FriendFeed by service. The one pervasive concern lodged against...

Firefox with Greasemonkey only: The YouTube H.264 user script adds a link to view and download the higher-quality version of YouTube videos in page. You already know how to hack YouTube URLs to...

Firefox with Greasemonkey: The Videoembed Greasemonkey user script automatically embeds any video from YouTube, MySpace, MetaCafe, and more directly into a web page wherever videos are linked but not...