Yog is a dynamic script language like Python and Ruby. Yog's web site is https://github.com/SumiTomohiko/Yog . The documentation is at http://SumiTomohiko.github.com/Yog/.

Flourish is an action game, with strong inspiration from Brandish for Nippon Falcom.Flourish's web site is http://SumiTomohiko.github.com/flourish/.

sumix is a 1-CD Linux distribution based on Tiny Core Linux. The objective of this distribution is providing an easy way for trying softwares written by SumiTomohiko.sumix's web site is http://SumiTomohiko.github.com/sumix/.