Night Owl

YoruFukurou (NightOwl) is a powerful native Twitter client for Mac OS X, designed for Twitter addicts.
Developer: @aki
User Interface Designer: @hydroxygenic

Features:

- Manage multiple Twitter accounts
- Create tabs from rules (user IDs, keywords and regular expressions)
- Create Twitter search tabs
- Create tabs from Lists
- Block unwanted Tweets (user IDs, keywords, regular expressions and application name)
- Powerful keyboard shortcuts
- Conversation view
- Single user view
- Change font size
- Unread management (hit space key to read through unread Tweets)
- Powerful notification support (sound and growl)
- Two different appearance modes (normal view and mini view)
- Image preview
- "Paste to YoruFukurou" bookmarklet for web browsers
- Autocompletion (user IDs and hashtags)
- Now browsing & now playing
- Upload images
- Customizable image service
- Instant filter
- URL shortening
- Customizable URL shortener
- Translation
- Show one-sided follow badge
- Color customization
- API Error console