provider-corner
This corner of GitHub collects providers for OpenSSL 3.0 and beyond. Some of the providers have repositories here, other are simply linked to below
Providers elsewhere
BLAKE3 provider (blake3-prov) by Jordan M.
Open Quantum Safe provider (oqs-provider) by Open Quantum Safe. This is their liboqs integration in earlier OpenSSL versions, taking the form of a provider for OpenSSL 3.
TPM 2.0 provider (tpm2-openssl) by Petr Gotthard and the tpm2-software community.