The following packages for Ubuntu 12.04 have been released.
See here (C++) or here (Python) for downloads and installation.
Windows msi(installer) package (only trying samples)
Development environment is required for RT-Component development. See download page for details.
Motion editor/Dynamics simulator
Integrated Development Platform
RT-Components collection by AIST
Tokyo Opensource Robotics Association
Middleware for DAQ (Data Aquisition) by KEK