diff --git a/auth.md b/auth.md
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index 0000000..28240b3
--- /dev/null
+++ b/auth.md
@@ -0,0 +1,3 @@
+* https://github.com/ory/kratos 
+* https://github.com/keycloak/keycloak
+* https://github.com/supertokens/supertokens-core