Simple NSView or NSViewController based picker for Emoji. I took the wonderful work of AGEmojiKeyboard (https://github.com/ayushgoel/iOS-emoji-keyboard) as a base to create an OS X version. Its extremely simple and worth a couple hours of work. Its useful if you want to allow a user to enter Emoji without having to use the "special keyboard" in the edit menu. An example would be like Messages/iChat which has a smiley face picker next to the text entry.
FlatUI Colors (http://flatuicolors.com/) palette for use in Xcode. Install by executing the following command in your terminal: wget -P ~/Library/Colors https://raw.github.com/hemantasapkota/FlatUIColorPaletteXCode/master/FlatUI.clr Note: You must restart XCode to start using the palette.
Marvelous is an unofficial native interface to the Marvel Comics API for OSX. It is built on top of the Foundation framework and it uses the high-level operation and networking abstractions built into the Cocoa framework. The design of this framework aims to be easy-to-use in your projects and semantically related to the API.