Hi,

> in case I'd put some Ruby utility online for download:
>
> Will .zip be OK for users on Linux / other Unixes, or should I provide
> tar.gz in addition to the .zip?
It's better to provide tar.gz in addition to .zip because some Unixes don't
have installed unzip by default.

> What's a good tool to create tarballs on Windows?
cygwin + GNU tar

Egor