Damn Small Linux
Damn Small Linux or DSL is a free distribution ('distro') of the Linux operating system (OS) for the X86 family of personal computers (PC's). It was designed to run graphical applications on older PC hardware - e.g. PC's with 386/486/early-Pentium processors and very little memory. DSL is a LiveCD with a size of 50MB. It can be installed on storage media with small capacities, like bootable business card, 64MB USB flash drive, CompactFlash card, and Zip drive.
DSL can also be run inside another operating system, using an emulator such as QEMU or Q.
DSL is not to be confused with DSLinux, which is a different Linux distribution for the Nintendo DS handheld game console.