Userscripts.org

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

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。

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.

Minify recognizes any URLs in what you are typing and automatically shortens them using the is.gd service.

Utility to send Direct Message to multiple users at once on Twitter.

twitter https link rewrite and redirect script

Enhance twitter.com by adding a search box (with search suggestions) to search tweets or current events/happenings right from your twitter home page.

Replaces the 'more' button on twitter.com with 'MOAR!'

Retweet Interesting Tweets on Twitter

Expands snipr, tinyurl.com, is.gd, zz.gd and bit.ly urls on Twitter and FriendFeed to show you where they're pointing.

Adds a search field to the Twitter interface

replace video links to NicoVideo thumbnail.

reloads twitter home page after updated your status.

kills confirmation dialog on deleting DM.

Adds a character counter to the comment field, clicks the 'reply on Twitter' and has an interface for sending Tweets

adds links to hashtags.org, twemes.com or search.twitter.com to tweets on twitter.com

Undo the text input lock on Twitter

Convert direct links to Twitter tweets to use Quotably instead

Marks Twitter tab with the number of unread messages

Makes the character counter count bytes instead of Unicode characters, since that's what Twitter uses at the back end

Update by hitting Ctrl-Enter from the text box

Keep the elapsed time indicators current