Read the first paragraph ya freaking troll.
After a decade of neglect and increasingly reluctant support from IBM, the manufacturer, the OS/2 community persists. Where users of GNU/Linux or FreeBSD have turned to free and open source software (FOSS) for political and philosophical freedom and software quality, the surviving OS/2 community has been turning to FOSS as a means of defending members' right to use the operating system of their choice. The result is a small but surprisingly diverse collection of projects that, to a GNU/Linux user, is a mixture of the familiar and exotic.
Still doesn't make sense. Can they run OS/2 without a commercial license? Do they have access to the OS/2 source code? Aren't the answers to this "no"? I'm sure you'll correct me if I'm wrong, or even attempt to if I'm not.