authtestPackage authtest implements authentication related test helpers.
devshellPackage devshell implements Devshell protocol for locally getting auth token.
firebasePackage firebase implements an auth server that allows firebase-tools to use an exposed OAuth2 TokenSource for auth.
gcemetaPackage gcemeta implements a subset of GCE metadata server protocol.
gsutilPackage gsutil implements a hacky shim that makes gsutil use LUCI local auth.
internal/localsrvPackage localsrv provides helpers for running local TCP servers.
localauthPackage localauth implements localhost HTTP server that hands out tokens to local LUCI-aware processes.

Updated 2020-09-29. Refresh now. Tools for package owners.