Damn Small Linux (DSL) is another small, minimal-requirement distro, which aims to deliver solid functionality and ultra-fast performance on very-low-end machines, with as little as just a handful of MB of RAM.
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DSL is a very nice little distro. It is fast and stable. Its modest footprint makes it ideal for olden computers with antique hardware. And it packs a useful bunch of lightweight applications, good enough to serve a broad range of users.
The only problem is: DSL is not very pretty.