NextAction multiple contexts
In NextAction version 1.2.0 I added support for multiple contexts. When you edit a task, you can add and remove contexts from a list.

This can be useful if you have a task that you can work on in more than one context, for example at home and at work.

The result is that the application will display you task in multiple contexts.
NextAction is a free Android application to make your "Getting things done" (GTD) implementation easier, look for it on the Android market.