Try Roboto Origin in the browser
Watch the robot move, then move each joint yourself within its real limits: the part it moves lights up. MuJoCo runs in your browser: nothing runs on Robotheca's servers, and no code from the repository runs.
Downloads 31.8 MB from GitHub, once: your browser keeps them for next time.
Files come from GitHub at commit c71fd92: the URDF (modules/roboparty_train/robolab/data/robots/roboparty/rpo/urdf/rpo.urdf) and its meshes. Walking and balancing need the creators' own controllers and are not simulated here.
Model by @Roboparty, from Roboparty/roboto_origin at commit c71fd92, read from GitHub in your browser. Hardware license: CERN-OHL-W-2.0; software license: GPL-3.0-only. The simulation shows how the model moves, not how the real robot will behave.