There was a time when the mere survival of Windows Mobile was dependent on Operaâ€™s software, so bad was IE Mobile.
Thankfully we are no longer in those days, and alternate rendering engines are not only not needed, but in fact not available on Windows Phone 7.
However if you yearn for those nostalgic days, or merely looking for al alternative, Ultrashot on XDA-Developers appears to have achieved the impossible.Â He has created a XAP wrapper for the Windows Mobile version of Opera Mini that will run on Windows Phone 7.
The handset does however need to be fully unlocked, like the DFT ROMs, not just Developer unlocked or even InterOp unlocked.
The only limitation is that it does not support rotation, but Ultrashot says this is coming.
He reports that it may be possible to port the full Opera Mobile, but that this has more dependencies.
Read more in this XDA-Developers thread.