Userscripts.org

Loads pages endlessly when scrolling on the Twitter timeline. Other features: remembers last read tweet, embedded location map, more dynamic interface, tab-completion of friend names and live updates with Growl notifications.

See profile bio text, following & follower count, web link, and most recent Tweet for all friends and followers on the Twitter follow, following, and List feature's user lists. Recent update 11/28/09: Added recent Tweet's time and source.

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

shows how often a user tweets (average number of tweets per day)

Hides promoted tweets in your timeline on twitter.com

adds a textarea (below user profile header) with various user information (user registration date, average number of tweets/day, id, days, number of lists and favorite tweets, some hidden info, and MUCH more). copy all in 1-click.

Automatically show new tweets on Twitter web interface

Show an average tweets per day on Twitter, but now on your homepage.

Shrink and enlarge a user's statuses on Twitter.com. Preferences saved in cookies for return visits. This is similar to the view options in Twitteriffic.

A module for you to use in your GM script. This provides a simple way to run some code on every tweet, even ones loaded later, as soon as they are loaded. Stop using timers to check for new tweets!

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

Script to help users Tweet about their Fitbit sleep statistics. I'm aware of my poor naming choice. It's silly.

moves the Favorites, Lists, and Media links to the top. by doing so, you can then hide the sidebar and expand tweets timeline div.

enables you to subscribe to users' RSS feeds.

show tweets about current location(tweetmeme.com engine version). 現在のページ(URL)に関するつぶやき(tweets)をカウントして表示

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

Hide World Cup Tweets

Hides tweets related to Foursqure