Thanks Pierre for your feedback. [:)]

I really don't know if this modification is totally authorized.

It's not a problem to remove the sub folders of jre and lib/ext folders that don't match the operating systems you need.

An alternative would be that you upload different versions of SH3D-portable depending on the OS's user.

No, I plan to release one archive only, it's easier for me to handle and true portability (across computers and operating systems) is needed by a lot of people. 500 MB isn't that much nowadays, and the compressed file is reduced to 117 MB thanks to 7-zip. [:)]