Userscripts.org

Adds nested replies to every Twitter conversation thread (updated 27th Aug, 2010)

Nested Replies, Custom Search Tabs, Autocomplete, Pagination, RT button, Media Embed, URL Expansion, Hash Tag Search Links, Social Links

Remove Twitter friends who don't follow you back. Click the "Remove marked users" button at the bottom of the list to activate.

From a users profile page there isn't a simple indication as to whether their following you or not. Here's where this hack comes in.

This userscript will add the favorites count to the home page for logged in users and to all profile pages.

View Twitpic pictures(thumbnail) on mouseover in Twitter

Replaces the boring "What are you doing?" with more interesting questions. Some of them work as creativity boosts for when you have the tweeter's block. Others may cause you to reconsider your position.

Infinite timeline scrolling, automatically update, RT/via style quoting tweet, translating tweets, picture tumbnail badges, translation and inline reply chains to twitter.com.

This userscript will add microformat markup to appropriate twitter.com links which are not on the twitter.com domain.

Retweet with a click

This userscripts adds a retweets link to all twitter profile pages.

Adds a link to all Twitter invites to allow you to block them easily - works in Gmail or Google Apps Mail.

Display several informations about the twitter profile your looking at to help you decide wether or not s/he's worth following

Turn #hashtags into links to twitter search and link to hashTweeps to see who else used this tag

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!

Converts the location field on twitter to a Google Maps link instead of just showing coordinates or a string

Helps Twitter users switch between accounts.

When press follow button, send out update

Display images from links directly on twitter.com or other web-based twitter clients. In Chinese: 在 twitter 及其客户端网站上显示图片缩略图。

Listen to any tweet in its original language on Twitter web interface

Easily insert special symbols in your tweets

Shows results from Twitter on Google search pages

Adds retweet button next to the actions area of a tweet on Twitter. Period.

This userscripts adds a link to message a user from their profile page.

This script adds http://m.twitter.com(twitter mobile) convenient function to use on your PC.

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

Automatically show new tweets on Twitter web interface

AutoPager for Twitter (Greasemonkey, Opera9.5+ and Google Chrome 2)