add alternatives

README.md

@@ -31,9 +31,14 @@ The Keycloak Auth Proxy makes it possible to protect web resources that have no
 
 ## Usecases
 
-There are two very common usecases why you would like to use Keycloak Auth Proxy
+There are two very common usecases why one would like to use Keycloak Auth Proxy together with an Identity & Access Management Service (IAM)
 
 - Protect static website and allow only authenticated users to see the content
 - Outsource the authentication to Keycloak Auth Proxy on just relay on the header parameter about the user then Keycloak Auth Proxy forward to you.
 
+## Alternatives
+
+Despite the uniqueness of _keycloak-auth-proxy_ there are other project that solve the similar problem differently.
+
+...