Softaculous historically offered (one-time fee). While no longer sold directly, existing lifetime licenses are still honored. You may find resellers offering transferred lifetime keys, but verify carefully—they are non-transferable officially.
For web hosts and resellers, Virtualizor provides modules to automate licensing for their own clients: WHMCS Licensing Module virtualizor license
Virtualizor offers three primary license tiers, each tailored to different business scales: Softaculous historically offered (one-time fee)
While some open-source panels exist, Virtualizor is a premium product. A license gives you access to: virtualizor license