Binaries provided by getswiftfox.com are not licensed MPL and therefore are not freely distributable. The license to use Swiftfox extends to the user that downloads Swiftfox from this web site. No one may repackage or redistribute Swiftfox binaries in any form without prior permission. Any questions relating to licensing can be directed to me and I will do my best to assist. Please also note that the licensing restrictions were put in place to safeguard Swiftfox users against the possibility of obtaining tainted versions from anyone who may wish to maliciously alter the binary and redistribute it. Yes, that makes Swiftfox "non-free" in the Debian sense but it will always be free of charge to all users. If anyone has a better solution I would be glad to hear it.
Swiftfox is trademark Jason Halme and as such any unofficial builds need to be named differently and can not use the Swiftfox brand.
Source code is available. Starting with Swiftfox 2.0 I will be releasing the source code in the form of a patch against the corresponding Firefox source tarball.
Downloading any binary or patch from this web site constitutes acceptance of these terms and those mentioned in the license.