Ideas for hackingparties or more serious projects

A mod_php -like apache module for interpreting .erb files

A php-fastcgi like multithreaded daemon to render .erb files

References :

• http://pallas.telperion.info/ruby-cgi/
• http://blogs.oracle.com/trawick/entry/running_a_simple_ruby_fastcgi
• Is there a PHPish way of doing webpages with Ruby? and ruby-cgi gist

• Using XMPP or 0mz
• Server done ruby (sinatra? eventmachine?), javascript (nodejs?) or C

Features:

• Friend list & groups manager
• Sandbox (where files go by default, not shared)
• Share groups (each group associated with individuals & groups)

References:

• tahoe-lafs (python, very close to the idea, very slow)
• moosefs
• xtreemfs
• drdb

• Javascript
• Canvas ou SVG