Handmark, a leading global developer and distributor of mobile applications and services, launches TweetCaster, the advanced, feature-rich Twitter application available for Android smartphone customers.

TweetCaster makes “tweeting” from Android-based smartphones fast, easy, and fun, delivering a simple, yet comprehensive Twitter experience. In addition to all the standard features needed to enjoy a complete mobile Twitter experience.

TweetCaster offers:

• Multiple Twitter account support
• Integrated retweets
• Integrated Twitter lists
• Push notifications for tweets, mentions and direct messages
• Offline tweet caching
• URL shortening (and previews)
• Photo attachment
• Threaded direct messages
• Font/Theme customization

TweetCaster is immediately available for all Android-based smartphones, including the popular Droid and Nexus One.

A free version of TweetCaster is available in exchange for a “tweet” about the application. TweetCaster Pro, a premium version of application without ads, is also available for $4.99 in Android Market. For customers who download the free version of TweetCaster and wish to upgrade to TweetCaster Pro, an Upgrade Key will also be available in Android Market.