Several users maintain community-driven lists of keys for home lab or testing purposes. These often include keys for vCenter Server 8 Standard and ESXi 8.

You can download a full-featured version of vSphere 8 for a 60-day trial period directly from Broadcom.

If you have an existing entitlement, you can manage and combine your keys through the Broadcom License Management tools Note on "Free ESXi":

A valid license key is crucial to unlock the full potential of vSphere 8. Without a proper license, you'll be limited to a 60-day evaluation period, after which you'll need to purchase a license key to continue using the product. A license key ensures that you're entitled to use the software, receive updates, and access support from VMware.

The full "private cloud" stack.

For official trials or free versions, you should register directly through the Broadcom Support Portal to obtain a legitimate free ESXi hypervisor license .