Or from Permit.io here :) - we support OPA, Cedar, as well as Amazon Verified Permissions, and we'll be coming out with more soon.
Both in Permit.io and in OPAL
1Graham from OSO (gneray) - just didn't see the recent news, I guess we'd need to speed up OSO support as well ;-)
1 - https://docs.opal.ac/tutorials/cedar