Tiny Core Linux (TCL) is a minimal Linux kernel based operating system focusing on providing a base system using BusyBox and FLTK.

[2][3] The distribution is notable for its small size (11 to 16 MB) and minimalism; additional functions are provided by extensions.

[4] Minimal configuration: Tiny Core needs at least 46 MB of RAM in order to run, and (micro) Core requires at least 28 MB of RAM.

[8] The developers describe TCL as "a nomadic ultra small graphical desktop operating system capable of booting from cdrom, pendrive, or frugally from a hard drive.

"[9] As of version 2.8.1, the core is designed to run primarily in RAM but with three distinct modes of operation: