Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Codester - The marketplace for ready-to-use web development assets
AppsGeyser - Appsgeyser is the easiest to use DIY native mobile app creation platform.
CodeCanyon - Scripts and Snippets From $1 for PHP, JavaScript, ASP.NET, CSS, Plugins, HTML5, Mobile and more
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.
CodeGrape - CodeGrape is an online marketplace for Themes, WordPress, Plugins, PHP Script, JavaSCript, HTML5, Mobile Apps, Print, Graphic and CSS files.