| Mobile Code

Guile

Evaluation with respect to Distributed Hypermedia Applications Development Issues:

Runtime Safety

Yes, with runtime typechecks

System Safety

No working implementation, as far as I know, but the design of guile seems to acomodate this feature. Needs more study.

Cross-Platform GUI API

Tk is being ported to the Mac and Windows platforms, but it's not clear to me that the interface won't change in the process. They may end up with a portable GUI interface, but I expect that the existing code base will need to be tweaked at least a little for the non-X platforms.

Concurrency

No?

Type system

scheme

Module System

Yes. Kinda like Dylan.

Exceptions

conditions, errors, ala scheme

FFI

based on SCM. Kinda messy. Conservative GC.

TCP/IP API

???

Flatten/Serialize/Pickle

No??

Mobile Closures

No. I don't think the heap is instrumented enough to pickle closures.

Licensing and other Intellectual Property Rights Issues

In order to compete with Tcl, guile is NOT covered by the GPL. I'm not exactly sure what the terms are, but they're similar to X/Berkeley/MIT, I think.