cliff - Command Line Interface Fast Framework
csv - Module for handling Comma Separated Values
ecalc - Equation Calc
graphr - Draw graphs via dot
howdy - Simple instant messaging system for local nets.
mtyper - A language/layout-independent typing tutor
rdoc - Generates documentations from ruby sources
rdqs - Ruby DataQuery Shell
signals - Simple GTK-like callbacks
testunit - A framework for unit testing
testunit-runit - RUnit compatibility layer for Test::Unit
webfetcher - Fetch large amounts of documents and images from the web.
webrick - A web server toolkit like bricks.
xbuiltins - Additions to builtin classes
Right now all available modules are in pure Ruby. I’d like to
experiment with binary extensions, anyone having a module with an
extension compiled for more than one platform (at least linux-i386 and
mingw32 or cygwin) would care to send it to me?