Projects I'm currently involved in:

 * Ikarus Scheme:
      see http://www.cs.indiana.edu/~aghuloum/ikarus/
      and http://launchpad.net/ikarus/

 * The portable R6RS library and syntax-case system:
      see http://www.cs.indiana.edu/~aghuloum/r6rs-libraries/
      and http://launchpad.net/r6rs-libraries/