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Community-owned open-source enterprise Linux OS, binary-compatible with RHEL. Forever-free with long-term support and easy migration tools for servers and production use.

Open-source Linux OS from Canonical for desktops, servers, cloud and IoT. Free LTS releases with optional Ubuntu Pro for extended security, used by developers and enterprises.

Completely free open-source OS maintained by a global volunteer community. Known for stability, vast package selection and strict free-software standards, used on servers, desktops and as a base for other distros.

Community-driven open-source enterprise Linux OS, fully binary-compatible with RHEL. Offers long-term support, free migration tools, and production-ready stability for servers.