TweetAdder is an interesting and unique software that allows you -in general- to manage Twitter accounts.

You can manage more than Twitter account within the software at the same time, have control over the follow/unfollow process, clean your account from dead followers, and empower your Twitter marketing plan by scheduling tweets, or automate the process by tweeting an RSS feed. You also can retweet another user tweets, and thank people when they follow you.

Tweet Adder 4.0 has many features, trust me You wont get bored
What TweetAdder 4.0 Offers

Probably the main change that has been made in TweetAdder 4.0 is using Twitter API and Oauth. Also, there has been an improve for Search Filters to work with all search types:

Filter Results by:

Followers Friends
Tweets
Filter Private Accounts
Filter Accounts with default profile images
& More
New Unfollow filtering options

Not Following Back
No Profile Image
Foreign Language
High Ratio
Inactive
Talkative
Quiet