For 10 points, name this potential threat to Microsoft, a free version of the Unix operating system.
In February 1999, IBM became the latest of a string of companies, including Hewlett-Packard, Dell, and Silicon Graphics, to declare that they would begin selling computers with this particular feature, developed in Finland by Linus Torvalds, and distributed by Red Hat Software Inc.  For 10 points, name this potential threat to Microsoft, a free version of the Unix operating system.
In February 1999, IBM became the latest of a string of companies, including Hewlett-Packard, Dell, and Silicon Graphics, to declare that they would begin selling computers with this particular feature, developed in Finland by Linus Torvalds, and distributed by Red Hat Software Inc.  
Linux