Userscripts.org

Add Google +1, Twitter, Facebook Like, Pinterest 'Pin It' buttons and more to add-on pages at addons.mozilla.org

Hide retweets on Twitter user account

Hide replies on Twitter user account

Hides user(s)' tweets instead of unfollowing them. Doesn't hide their replies or convos

Beautifies Twitter like Pinterest with multi-column layout and image-like posts...

Add keyboard shortcut, Meta+Return, to send tweet on Twitter.com

Old School RT Functionality for New Twitter, Allows retweeting with comments

Shrinks your tweet using informal abbreviations!

Automatically shortens URLs before tweeting them.

Remove Facebook "like" buttons/iframes/widgets/shareboxes from other websites, along with google plus, linkedin, twitter, sharethis, etc. Supports dynamic sites (AJAX, etc.) as well. Works in Chrome, too! (inspired by rnaud's script #76037)

Adds small button next to shortened URLs (t.co/bit.ly/goo.gl) on Twitter and other sites that will replace the shortened URLs with their real locations and vice-versa. Useful for when you don't want to blindly click links.

More Function In New Twitter

Shows a Flattr-button for all tweets and on user profile pages.

Adds a line between old and new tweets as it was in the old design

displays a tip indicating how many tweets on the current page(URL) / 閲覧中のページに関するつぶやきの件数を表示。クリックで一覧を表示

Tweetfilter is a browser extension for twitter.com, supporting Firefox 3.6+, Chrome 10+, Opera 11+, Safari 5+ and IE 9+.

Easily insert special symbols in your tweets

Allows you to translate tweets from twitter.com at the tip of your cursor

Hide World Cup Tweets

Hides those stupid "Retweet this to win..." tweets.

Add different background colour to tweets according to their age

Adds auto reloading, continuous scrolling, @reply highlights, last read tweet, auto-completion of friends in @replies, @mentions, and direct messages, inline replies, minified layout, map for coordinates, retweeting, tweet preview, and more!

tweet via

Detects twitters of exactly 140 chars and places a twoosh indicator after the twitter text. Also can optionally display character counts for every tweet.

Removes Tweets with Certain Keywords. twitter. block tweet. block user. block profile. end spam. block twitter noise.

Adds link to ˀ Twitter.Grader profile from Twitter profile pages. Is a modification of script by Abhisek. If you do better one I'll delete.

Adds link to Tweetrush profile from Twitter profile pages. Is a modification of script by Abhisek. If you do better one I'll delete.

Adds link to ˀ ✉@user with Search.Twitter from Twitter profile pages. Can toggle follow whole conversation. Is a modification of script by Abhisek. If you do better one I'll delete.

Adds link to Twellow map and directory profile from Twitter profile pages. Is a modification of script by Abhisek. If you do better one I'll delete.