Twuffer – A Twitter buffer that allows you to compose tweets in advance and then schedule their release.

appTracks: Web
appTags: compose future tweets, schedule tweets, tweets, updates

Twillow — A twitter directory, automation tool, auto follower, follower manager, tweet filter, keyword tracker, tweet scheduler, direct message auto-deleter…plus reporting and more.

appTracks: Web
appTags: auto delete, auto following, automation, direct messages, directory, follower, keyword, reports, schedule tweets, tracking, tweet filtering

Twiddict – If you’re addicted to Twitter and Twitter goes down, tweet your heart out through Twiddict and they’ll make sure your tweets end up where they belong.

appTracks: Web
appTags: fail whale insurance, schedule tweets

Tweetlater – Schedule tweets, bulk upload tweets, track keywords, send welcome DMs, URL shortening, auto following, more.

appTracks: Web
appTags: auto following, direct messages, keywords, schedule tweets, tracking, url shortening

Twittermail – Let’s you post to Twitter via email. Also, schedule future tweets, send photos to Twitter, and get replies by email.

appTracks: Web
appTags: email, pictures, schedule tweets

FollowWatch – Your secret detective to find out who’s following you on Twitter.

appTracks: Web
appTags: lost followers, schedule tweets, stats, tracking

tweet spinner – An advanced Twitter-based app to help small businesses, power Twitterers, and others increase their productivity.

appTracks: Web
appTags: auto following, productivity, rotate profiles, schedule tweets