Userscripts.org

Adds a search field to the Twitter interface

Ignore tweets that contains hashtags you specify.

support Arabic on twitter

Auto Links Twitter Hashtags.

Append a retweet button to the end of each twitter entry, original script by Ziru, updated by me.

Autolinks hashtags in messages and makes them searchable via the Twitter Search API by clicking on them. Also expands TinyURL links.

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 ˀ Twitter.Counter 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 a button on Twitter profile pages to follow users' Twitfave profile. Is a modification of script by Abhisek. If you do better one I'll delete.

Adds a button on Twitter profile pages to follow users' Twitter100. 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.

Automatically Squeezes tweet into less characters as you type using TweetShrink.com

Display popular Twitter Trends on your Twitter home page.

Add links for advertisers - Prototype for monetizing Twitter

For each tweet, adds a link to search.twitter.com to find replies to that user

Grassroots Media - Overlay photos and blog posts on the BBC news site

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.

Adds a search box to the Twitter sidebar.

replace video links to NicoVideo thumbnail.

Show list of friend names when you type "@" or "D".

Reloads Twitter every two minutes using Ajax. An countdown is shown above the last status. If there is any text in the status box reloads are postponed.

Adds photo and video sharing to Twitter! Lets you add YouTube and Flickr videos to Twitter

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.

inquire of Twitter about the protected post / Twitter の個別発言のページでそのユーザーが Protected かどうかを調べ、アイコンを表示します。

For Fluid: Reloads Twitter every two minutes with an in-page countdown. If there is any text in the status box reloads are postponed.

Though most screen-readers don't read utf-8 keys this script replaces twitter-keys with plain text.

reloads twitter home page after updated your status.

Makes FriendFeed into your virtual social workspace. Adds 26 communication multimedia and social sites with favicons in topbar of new friendfeed.

An icon + tab script communication services.