AnonTwi supports: anontwianontwi    
             
      + Follow news at: @AnonTwiNews
                       
      + AES + HMAC-SHA1 encryption on Tweets and Direct Messages --> [More Info]
      + Secure Sockets Layer (SSL) to interact with API
      + Proxy Socks (for example, to connect to the TOR network)
      + Random HTTP header values
      + Send long messages splitted automatically
      + Automatic decryption of tweet's urls or raw inputs
      + Backup messages to your disk (max: 3200)
      + Send fake geolocation places
      + Remove data and close account (suicide)
      + View global Trending Topics
      + UTF-8 + Unicode support (chinese, arabic, symbols, etc)
      + Multiplatform: GNU/Linux, MacOS, Win32
      + Detailed colourful output results
      + Generate tools and modules
      + GTK + WebGUI interfaces
      + An IRC bot slave

And many other features than you can see detailed here

hg clone http://hg.code.sf.net/p/anontwi/code anontwi-code | Last: AnonTwi v1.0 | All: Sources 
anontwi