pfSense is a free, open source customized distribution of FreeBSD specifically tailored for use as a firewall and router that is entirely managed via web interface. In addition to being a routing platform, pfSense includes a long list of related features and a package system which allows further expandability.

Release notes: https://docs.netgate.com/pfsense/en/latest/releases/2-4-5-p1-new-features-and-changes.html
More info: https://distrowatch.com/table.php?distribution=pfsense