I just wrote an OAuth server / provider library in PHP. Buy it from me, Envato!
Otherwise there are plenty other options available.
Also a +1 or ‘Like’ button is missing from the forums.
+1, would be really useful for support forums !
Also there are plenty options available on GitHub
I was thinking about this many many times. This will solve so many problems like access to support forums, access to documentation, tutorials, assets, etc.
A BIG +1 for this.
Just allow envato.com regular login to permit redirect to different websites. With somekind of a response.