There are a huge collection of application for Twitter. In this site, there is a long list of those applications. I hope these will surely helpfull to you.
NOTE: There are a lot of wimpy “Twitter Tip Lists” out there; this is NOT one of them. These 100+ Twitter Tips go from insightful Twitter toddler level to explosive Twitter-bomb advanced. Even if you think you’re a Twitter social or Twitter business pro, you might want to start from the beginning – this is one hefty shovel full of “Twitter How-to” ready for you to Digg.
NOTE 2: All 100 Twittin’ Secrets are complete and have been posted across multiple internet sites, blogs and other innovative locations such as within theiGoogle iTwitter Tab and the MyTwitter Toolbar.
Individuals who follow Dan Hollings on Twitter will be notified as new tips and secrets are revealed and where they are posted.
NOTE 3: Feel free to use, expand upon, comment and share these Twitter tips, secrets & strategies as you wish (all 100 are free), but please credit or link back properly so that everyone may benefit from knowing the original source. I welcome feedback and commenting.