 The operating system runs on a custom open source kernel written by Whitworth; new features include IcFs, a dynamic configuration filesystem that replaces ioctl.The modular kernel of Whitix is licensed under the GNU General Public License, and is a fully preemptive multitasking kernel with multithreading.It supports a number of filesystems, including the FAT family of filesystems, ext3 (with journaling), Reiserfs and ISO9660.