On Thu, Jun 12, 2014 at 5:24 AM, Staffan Tylen <staffan.tylen@gmail.com> wrote:
I've looked in the ooRexx doc for an implementation of the Windows.System.Launcher API but I haven't been successful.

That is an API for building Windows Runtime apps, which as far as I know is only available in Windows 8.

Is this API supported in ooRexx and if so how?

There is no ooRexx support from the project.
If not, what alternatives do I have to launch for example the default browser using an argument such as www.xyz.com, or the default email client?

You could try to find a third party package that supports the API.  (Like for example rexx/SQL supports mysql.)

Mark Miesfeld