Firewall Builder (fwbuilder) has no nftables support and has not been actively developed for years. FirewallFabrik is its modern successor: a complete rewrite in Python and Qt6 with native nftables support, seamless migration of existing .fwb files, and a GUI that feels just like the original.
utr is a CLI tool for UptimeRobot. Unlike other tools, it enables you to manage monitors, maintenance windows, alert contacts and status pages based on status, in a manner similar to Ansible. The desired configuration is defined in YAML files, and utr ensures that the actual state automatically corresponds to the desired state in an idempotent manner.