Tweetie 2 is one of the most feature-packed, well designed Twitter clients available for the iPhone. Tweetie 2 offers the most polished mobile Twitter experience around.

Key Features

• Seamlessly handle multiple Twitter accounts
• Explore all of Twitter, from your own timeline and mentions, to the favorite tweets of your followers and friends
• Fantastic new offline mode. Read, tweet, favorite, follow, save to Instapaper and more even when you don’t have a connection. Your actions will be synced as soon as you go back online
• Live-filter your tweet stream
• Post photos and videos, even configure your own custom image host
• Follow, unfollow, block and unblock from multiple accounts simultaneously
• Rich integration with Follow Cost, Tweet Blocker, Favstar.fm and more
• Translate tweets
• Preview short URLs

PDFCreator is one of the best known programs to create PDF files from any application. Start converting your documents and add encryption with PDFCreator to secure them again modifications.

Key Features:

• Create PDFs from any program that is able to print
• Security: Encrypt PDFs and protect them from being opened, printed etc
• Digitally sign your PDFs to ensure that you are the author and the file has not been modified
• Create more than just PDFs: PNG, JPG, TIFF, BMP, PCX, PS, EPS
• Merge multiple files into one PDF
• Easy Install
• Supports Windows Vista and Windows 7

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Pidgin is a chat program which lets you log in to accounts on multiple chat networks simultaneously.

Pidgin runs on Windows, Linux, and other UNIX operating systems.

Pidgin is compatible with the following chat networks out of the box: AIM, ICQ, Google Talk, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, Novell GroupWise Messenger, QQ, Lotus Sametime, SILC, SIMPLE, MySpaceIM, and Zephyr. It can support many more with plugins.
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