How Perl Changed My Life
How To Build A Scalable Storage System with OSS at TLUG Meeting 2008/09/13
Maglica - A Simple Internal Cloud Tool at #techkayac
Yapc::Asia 2008 Tokyo - Easy system administration programming with a framework by Gosuke Miyashita
Assurer - a pluggable server testing/monitoring framework
Inside Sqale's Backend at RubyConf Taiwan 2012
Xen Summit 2008 Tokyo - Operating Xen domains through LL(Perl/Python) with libvirt
Inside Sqale's Backend at Sapporo Ruby Kaigi 2012