Perl courseware for the web using client-side perl
This is an idea I've discussed with Gabor (szabgab++) during the last conferences - we could use perlito as a tool to write educational pages about perl, that would embed executable code that can be modified by the reader.
There is a possible alternate implementation, use remote execution in the server. But I like the idea of running the code in the browser.
This perl in the browser would be a "full" perl implementation (not necessarily fast), with I/O redirected to local variables or even local storage. Modules would be loaded from a remote "lib" using HTTP requests.
Here is an older article that shows the basic idea. This is in portuguese, it was written for Sao_Paulo.pm using perlito6.