A few twitter apps products I can recommend:

MarketMeSuite 2.0
Awesome Twitter/ Facebook Application, MarketMeTweet. Sells itself! You can brand Every Singe Tweet by using MarketMeTweet. Takes under 5 minutes. Also monitors @replies, facebook, reply campaigns, location targeting!
MarketMeSuite 2.0

TwitSellers’ Dream
75% Commission Check Out This Killer MRR / PLR Package And Prepare To Be Stunned!! All Twitter Products have been carefully selected and are of the highest quality.All with Master Resale Rights And/or Private Label Rights .Big Twitter Video Bonus included
TwitSellers’ Dream