TwitterBrite

TwiterBrite allows you to automate the more mundane parts of using twitter for business, so you can concentrate on talking with your client base. It allows you to run more than one twitter account at the same time and also allows more than one person within your organization to use the same account. It uses oAuth so you have complete peace of mind. It automatic posts any number of RSS feeds directly to your twitter account. Allows you to search for any complainants that may arise regarding your product and prevent them from becoming an issue.

Requirements:

.NET Framework 4.0

Limitations:

Limited functionality