Log on a bbs through telnet in Firefox !
A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.
Use ActiveInbox for Getting Things Done (GTD) with Gmail & Google Apps.
www.activeinboxhq.com
Post to Twitter from your address bar.
An extension to silently generate a TinyURL for your current page at the click of a button.
Lets you post photos, videos, mp3s, quotes and links to your Tumblr tumblelogs by dragging and dropping content onto the extension's statusbar icon or by the "Post to my tumblelog" menu items in the content's context menu.