I have seen application-specific links, but they tend to be to dead projects, etc.

By and large it seems that if you want to use this strategy in building an application, it seems to work fairly nicely. (I have done it on a small scale, and was happy.) But you wind up having to build a certain amount of infrastructure, and there don't seem to be a lot of available components structured in this way.

So it is a design idea that I think is useful, even without OS/language support. But I don't have any good links on that.

Cheers,
Ben