Puppy Linux
Puppy Linux is yet another Linux distribution. What's different here is that Puppy is extraordinarily small, yet quite full-featured.
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blendOS
blendOS is an Arch Linux-based, rolling-release distribution which automates installing software from supported distributions (Arch Linux, Fedora and Ubuntu) into containers. blendOS tries to make software management in across containers feel native and provides access to the user's home directory for each container.