It's not cheap
, but if you want the more robust OS (rather than a Microsoft product) and would like to use free ENC
charts, why not use FreeBSD with a nice Aqua interface over it? (AKA: OS X on a Mac or PC)
I use MacENC and it's never once crashed (neither has my OS in 4 years).
Plus, I don't have to even think about viruses, although a couple have been written for this platform. The vast majority of those ones that can be installed by visiting websites are geared toward Microsoft OSes.
Good stuff! -and the support is great. I called one time to ask about a feature and the guy spent a lot of time and effort to help me out.