OWASP Coraza WAF is a golang modsecurity compatible firewall library
Cerbos is the open core, language-agnostic authorization solution
Extensible security first OAuth 2.0 and OpenID Connect SDK for Go
Secure software enclave for storage of sensitive information in memory
Keybase Go library, client, service, OS X, iOS, Android, Electron
Oso is a batteries-included framework for building authorization
Enterprise-level Go language combat project