Hi Jeff,
* Jeff Davies jeff@llandre.freeserve.co.uk [20010629 11:27 -0400]:
Apache license, like BSD, is not as "free" as GPL since it doesn't prevent someone enhancing a peice of code, and keeping the "enhancements".
The Apache license is a free software license. It is not a copyleft license which allows the "enhancements" you describe. Following http://www.gnu.org/philosophy/license-list.html it is not even compatible with the GNU GPL.
Regards Lutz