Appetizer's unified stream combines your feed, your mentions and your new followers into one coherent and color-coded timeline.
Appetizer has support for all of ADN's important features, such as Global Stream, Starred posts, User Profiles, muting, reposting, tags, threads and more.
iSight, Pictures & Effects
Appetizer can attach and upload images. Even more, you can take images with your iSight and apply effects on them a bit like on Instagram.
Quickly add Screenshots
Appetizer can either take a shot of your whole screen, or allows you to take a screenshot of only a certain region and attach it to a post. You can filter these, too.
From within Appetizer you have fantastic search facilities: Search for users by their name, search for posts that belong to a tag, or search within the currently listed posts.
Power User Context Menu
Just right-click a post and you get a menu with a plethora of options: Copy the post, list all links, open in a browser, mute the user, block the client, see reposts, reply, view the thread, and much more.
Beautiful Emoji Popup
Inserting emoji on Mac OS X into your writing is very cumbersome compared to iOS. Appetizer has a fantastic Emoji popup that makes insertion almost as easy as on iOS!
New Post Hotkey
Want to write a post but you're using a different app? Appetizer allows you to define a hotkey that opens up a new post window from wherever you are! Some people sell just this feature as an entire app!
Mountain Lion Notification Support
Status Bar Icon with reminders for new followers and new mentions