Janetter - Janetter is a Twitter client application. Faster, smarter, and more powerful.
Hypefury - No idea what to share on Twitter?
Tweetbot - Sync your timeline across your iPhone, iPad, and Mac. Mute tweets by user, hashtag, tweet source, or keywords (including regex). 3rd Party support for image, video, read later, and timeline sync services.
What to Tweet - Never again run out of Tweet ideas.
YoruFukurou - YoruFukurou (NightOwl) is a Twitter client for Mac OS X, designed for Twitter addicts.
Toolset.com - The complete and reliable plugin for managing content types in WordPress.