JavaServer Pages

Build websites using Tomcat and JavaServer Pages

Windows Metro

Build touch apps for Windows RT and Metro

iOS

Builds Cocoa Touch apps for iPhone and iPad

Windows Desktop

Build rich business apps for Windows

Cross-Platform Servers

Build powerful cross-platform server solutions

Windows Phone

Build great apps for Windows Phone 7 and 8

ASP.NET

Build websites using ASP.NET and MVC

Silverlight

Build rich web client apps using Silverlight

Android

Build 100% native Dalvik apps for Android

Applets & Servlets

Build client and server web apps with Applets & Servlets

Mac

Build native 64-bit Cocoa Apps for OS X

...ands lots more

The Sky is the Limit.
Between .NET, Java and Cocoa, Oxygene is everywhere you want to go.