<a href=http://www.skyos.org/?q=node/647>SkyOS development is currently halted news.
The source code release under an open source license is a the 1st covered option and, if <a href=http://mattst88.com/blog/?dd=13&mm=02&yyyy=2009>this blog claim is true:
“Releasing SkyOS as open source/free software under the MIT or BSD license. By licensing under a very permissive license, it will allow projects from whom SkyOS has used code (e.g. Haiku) to use SkyOS’s code where possible.”
…we should encourage them to “make the big step” !