on Intel based Linux and Windows and on MacOS X through XDarwin.
    </p>
    <p>
	<a href="http://www.spheredev.org/">Sphere</a>
	is 2D RPG engine with a development environment.
    </p>
    <p>
	<a href="http://gaiacrtn.free.fr/practical-ruby/index.html">Practical Ruby</a>
	is an IDE for Ruby on Windows.
    </p>
    <p>
	<a href="http://www.gnuenterprise.org/">GNUe</a>
	is a suite of tools and applications for solving the needs of the enterprise.
    </p>
    <p>
	<a href="http://silverci