If I'm out on a remote trail, my cell phone doesn't work, much less wi-fi. Guess it'll have to cache information until you can sync up with a network connection back at the base camp?

Actually, many of the Sash extension APIs are cross-platform, and thus weblications written using these extensions will work on both SashXB and Sash for Windows. For example, the SashXB team has written a Checkers weblication that runs on both platforms.

Other extensions, such as GTK and Glade, are linux-specific, so you still use the full functionality of a specific platform if you choose.