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AlmaLinux OS
A free, 1:1 binary-compatible rebuild of RHEL, originally funded by CloudLinux and now steered by an independent nonprofit foundation.
Based on
RHEL
First released
2021
Package manager
DNF (.rpm)
Desktop environments
None (server-focused; GNOME available)
AlmaLinux launched the same year as Rocky Linux and for the same reason -- CentOS's shift to CentOS Stream left a gap for a stable, downstream RHEL rebuild -- with initial funding and engineering from CloudLinux, the company behind the CloudLinux OS hosting-focused distribution. It's now governed by the independent AlmaLinux OS Foundation, and it commits to remaining ABI-compatible with RHEL for the life of each release, so software certified for RHEL runs on AlmaLinux unmodified. Alongside Rocky Linux, it's a standard choice for organizations moving off classic CentOS or avoiding CentOS Stream's rolling model in production.
MirrorNest doesn't mirror distro ISOs — installation media should always come straight from the project's own official download page (linked above), so you get the correct checksum/signature to verify against.