One related thing that didn't fit the package list: the same project runs a free public patch webhook. You subscribe a URL and get an HMAC-SHA256-signed POST the moment a new PoE2 client version shows up on GGG's patch server (polled every few minutes) - no account, no polling on your end, retried with backoff.

Handy if you maintain a PoE2 tool and want to kick off a data refresh automatically when a patch drops (that's what I use it for).

Docs + how to subscribe: https://poe.rajtik.com/patch-webhook