Platform: Linux (41)

GNOME Do is an application that allows you to quickly search, launch and execute almost all that's possible under the Gnome desktop environment. With a plugin that now comes by default, you can tweet and receive direct messages very easily. And, if you have libnotify activated, it's a very powerful tool, as it shows you instantaneously on screen what you've received. It works with Identi.ca too.

The Helpful Twitter Client. Makes Twitter Easy. Discover your Content. Grow your Following. Schedule your Tweets. Be the SIGNAL not the NOISE. (Previously TweetMiner)

Choqok is a Free/OpenSource fast, efficient and simple to use micro-blogging client for K Desktop Environment. The name comes from an ancient Persian word, means Sparrow! Currently support Twitter.com and Identi.ca micro-blogging services.

Spaz is a open source microblogging client for Twitter, Identi.ca, and StatusNet. Versions are available for OS X, Windows, Linux, and webOS (Palm Pre)

OrSiSo offers a way for users of multiple social networks to access all of them from a central application, without having to go to several web sites. OrSiSo offers several ways to filter and block unwanted data (such as updates and pictures from people who are not close friends) via several automated tools (called the SocialCraft™ Engine). OrSiSo has also a built-in multi-chat client and is VoIP ready. OrSiSo supports FaceBook, Friendster, Bebo, Twitter and Flickr, and LinkedIn. The chat client supports Yahoo!, MSN, FaceBook Chat, AIM and Gtalk.

Ada is a little Twitter app with a clean, compact design. Ada is a small, simple, AIR-based app that won’t bother you with notifications while you’re working.

Tweet-to-screen, with Live PowerPoint and Keynote slides, moderation, and of course, polls.

Twitter Buttons or Follow me buttons are in great demand , plus the demand is growing each and every day for new Twitter Follow Buttons. Create your own, unique TweetButtons website with this script.

Perl interface to the Twitter API. Supports the REST, Search, and Lists APIs. Supports both OAuth and Basic Authentication. Net::Twitter is Moose based, using Moose Roles to provided optional functionality. Optionally inflate Twitter results to first class objects with the InflateObjects role. Add rate limit features with the RateLimit role. For applications like CGI scripts on shared hosting sites where minimal dependencies and faster initialization is required, see Net::Twitter::Lite.

A simple Qt4 based crossplatform client.

"Mitter is a client for Twitter. Currently, you can use it on Linux, Windows and OS X (running PyGTK) and on a console/terminal. Mitter is a simple application to keep your Twitter status up-to-date and to see your friends updates. It aims to be simple and with a small requirement list, while supporting multiple different interfaces."

an open source microblogging client for GNOME developed with Python and GTK. It supports Twitter, Jaiku, Identi.ca, Facebook, and Digg

Temporarily mute people you follow if they suddenly get verbose for some reason (conference tweeting, accidentally subscribed to annoying games). You can use our lovely bookmarklets, a DM or our full website to mute noisy friends by name or by keyword/hashtag. Head over to the Tools area to check 'em out at http://muuter.com/tools. We use OAuth, so we don't ask for your password.

Another Emacs client.

LocationTweet analyses twitter profile and Find out which country/region are the tweets coming from .This is a great tool if you are marketing something via twitter & want to see from where your followers are coming from .This is powered by Yahoo maps & all you need to do is put the id & click "Find Locations" . This will quickly display all your tweets details like Tweet detail , User & Location details .

Buzzbird is a full featured, multi-platform, multi-account desktop Twitter client that does *not* require any third-party support applications (like Adobe AIR or JavaFX).

Read and Post tweets; Send and Recieve DMs; All from within irssi. Support multiple accounts, context fetching, replying to particular tweets.

a Twitter client for the Gnome desktop. Features includes: gui-notifications, url tinyzer, and more..

The SuperTweet.net API is a simple way for your non-OAuth enabled tweeting scripts and simple apps to keep working after Twitter shuts of Basic Auth in June 2010. Simply sign in at http://www.supertweet.net and activate API credentials that you can use in your scripts then change your Basic Auth scripts to point to http://api.supertweet.net instead of http://twitter.com using the SuperTweet.net API credentials instead of your real Twitter password. As with OAuth, you can revoke your http://api.supertweet.net credentials and you never have to expose your real Twitter password to any third-parties

Perkpipe is a Twitter search engine that enables you to search & find most influential people and relevant tweets, as a way you search traditional web via Google & Bing.