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.
Keep in mind that SashXB uses JavaScript as an *application* development language, not as a webpage scripting tool. Sash weblications are run just like traditional applications -- not by just browsing to a page in Mozilla. The native functionality added to JavaScript is limited by the Sash security manager, which allows granular control over access to system resources on a per-application basis. For example, if a weblication needs access to the filesystem, the user will be notified prior to installation and be given full details of the weblication's requested security permissions.
Sash was designed with security in mind, and is in fact more secure than a typical native application written in C/C++/Perl. Because the JavaScript code is interpreted, the SashXB runtime can actually check each JavaScript call.
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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.
Keep in mind that SashXB uses JavaScript as an *application* development language, not as a webpage scripting tool. Sash weblications are run just like traditional applications -- not by just browsing to a page in Mozilla. The native functionality added to JavaScript is limited by the Sash security manager, which allows granular control over access to system resources on a per-application basis. For example, if a weblication needs access to the filesystem, the user will be notified prior to installation and be given full details of the weblication's requested security permissions. Sash was designed with security in mind, and is in fact more secure than a typical native application written in C/C++/Perl. Because the JavaScript code is interpreted, the SashXB runtime can actually check each JavaScript call.