If you mean "not made by the Linux kernel or GNU projects", that applies to much (most?) of the software available for Linux.
If you mean "proprietary", then NTFS-3G is GPL: http://www.tuxera.com/community/open-source-ntfs-3g/
If you mean "not made by the Linux kernel or GNU projects", that applies to much (most?) of the software available for Linux.
If you mean "proprietary", then NTFS-3G is GPL: http://www.tuxera.com/community/open-source-ntfs-3g/