Free twitter software for linux

rss2twitter project is a freeware perl tool (we distribute also a Windows executable) to send to Twitter (batch) the links and the posts of a RSS.
I decide to develop it because Ive a lot of blogs with Blogger and I like the wordpress Twitter pluging of Alex King.
Configure and run rss2twitter
At the moment rss2twitter is a command line and works in the same way on every OS supported by perl
rss2twitter [-options] (or perl rss2twitter.pl [-options]
where options include:
-help to print the line help
-verbose to print verbose messages
-version to print version
-debug to help to debug
-configure file to use a specific configuration file (the default is rss2twitter.cfg in the same directory of the executable)
rss2twitter uses the file rss2twitter.cfg as its configuration file. This file must reside in the same directory as the rss2twitter file, since it searches for this file at runtime. You can create your own rss2twitter.cfg file and use it with -configure option.
Inside this file, you can change the values for the user, password, feed
To change any of these values, you just need to edit rss2twitter.cfg. You can also create a new .cfg file and tell rss2twitter to read it at runtime, using the -configure yourfile.cfg option.
With user and password you have to set your Twitter user and password.
With feed you can set the RSS feed to download. rss2twitter will make a file named xxxxxxxx.r2t where xxxxxxxx is the user you have set in rss2twitter.cfg. rss2twitter will use this file to send to twitter only the new posts. DONT DELETE IT.
Pay attention: send posts to Twitter is very slow so run rss2twitter with -verbose to verify it is working.
Enhancements:
- Now the most recent post is the last entry in Twitter.

Pwytter is a standalone Twitter GUI client. This application is intended to be multi-platform.
Main features:
- Asynchronous Image loading
- Better UI response
- Less twitter API call (internal caching)

DZone Voting 1.0.2 provides you with a wonderful and useful Firefox extension which dramatically simplifies voting at DZone. Provides an unobtrusive voting widget on any link you visit from DZone. A big problem at DZone is that you have to remember to go back and vote for links you have visited, and this Firefox add-on solves that problem beautifully.

Every time you visit a link from DZone, this add-on places a small, unobtrusive widget on the target page to let you vote. Simply click the widget to cast your vote, and it will be registered just as if you had gone back to DZone. It's a simple and convenient solution. Try out the DZone Voting extension, and it will be radically easier for you to vote on DZone links.

Major Features:

1. The DZone Voting add-on also makes it easy to submit links into the DZone queue, visit a random "Surprise me" link, and control how link and submission pages open in your bowser.
2. Just click the little "dz" icon in the stats bar, and you can arrange the settings however you wish.

Requirements: Mozilla Firefox

Enhancements: Added support for DZone short URLs (Twitter).