Twitter is now the most popular micro blogging platform and its growing every day. But the problems with Twitter are common and many people had the issues of losing tweets. TwitterBackup is a freeware tool written in Java, which allows you to easily back up your Tweets. TwitterBackup is a tool that downloads all your tweets and stores them in XML format.
You need to specify the Twitter user name and the password and select a file to back up the tweets. In case you want an incremental backup, you can use this same file next time you do a backup.
Depending on the number of your updates, the backup process can take a long time. The user credentials are stored on local PC for backing up.