Hugor is a Hugo Runner, meaning a program in which you can load and play adventure games created with Kent Tessman’s Hugo authoring system:
Hugor supports all graphics, sound and music formats of the Hugo engine. Video, however, is not (yet?) supported. It runs on all current major operating systems (Linux, Mac OS X and Microsoft Windows).
Games that can be played in Hugor can be found at:
Baf's Guide to the Interactive Fiction Archive