Slackware Linux is a complete 32-bit multitasking "UNIX-like" system. It's currently based around the 2.6 Linux kernel series and the GNU C Library version 2.7 (libc6). http://slackware.com
What is Slackware Linux?
The Official Release of Slackware Linux by Patrick Volkerding is an advanced Linux operating system, designed with the twin goals of ease of use and stability as top priorities. Including the latest popular software while retaining a sense of tradition, providing simplicity and ease of use alongside flexibility and power, Slackware brings the best of all worlds to the table.