It is simple and instantly usable for beginners (as tested with middle and high school students with no programming experience), yet feature-rich and extensible for experienced developers. Unlike Eclipse and IntelliJ, it has a small footprint and is completely customizable with Lua. Unlike TextMate and Sublime Text, it includes a remote debugger and a full IDE feature set. Unlike Decoda, it runs on Windows, Mac OSX, and Linux and supports on-device debugging.
ZeroBrane Studio also provides several unique features: live coding for immediate feedback, Markdown formatting in comments for providing instructions with minimal context switching, and integrated interactive materials for those learning Lua or getting familiar with programming. More Info »
For those interested in game and mobile development, the IDE supports debugging for LÖVE, Corona, Moai, Gideros, Marmalade Quick, Cocos2d-x, and other engines. It also supports general Lua debugging for OpenResty/Nginx, Redis, Torch7, Wireshark, GSL-shell, Adobe Lightroom, Lapis, Moonscript, home automation, and more.