A Twitter branding tool to brand your tweets and provide a link to your home page right in the tweet. Also, this tool lets you run reply campaigns (no other tools have this yet.) : http://www.marketmetweet.com/
Tweet Adder - for finding people to follow
Aweber - excellent email software for list building, form building, auto-responder email newsletters, e-newsletter training along the way through their videosJing - share pictures on Twitter
Tweetdeck.com - for seeing all of the people you are following in columns sorted by searches, new followers, direct messages, mentions or groups, etc. (compatible with i-phone, free.)
Hootsuite.com - another application like Tweetdeck.(compatible with i-phone, free)
UberTwitter for Blackberry - a free application similar to Tweetdeck, but for Blackberry, not i-phone.
LinkedIn.com
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