OmegaLinux
OmegaLinux is an Arch-based, rolling-release Linux distribution featuring the lightweight LXDE desktop. It is suitable for installation on older computers with as little as 1 GB of memory.
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Peppermint OS
Peppermint OS is a Debian- and Devuan-based (previously a Lubuntu-based) Linux distribution that aims to be fast and easy on system resources. By employing its Site Specific Browser, Peppermint integrates seamlessly with cloud and web-based applications.