diff --git a/sing_macros/README.md b/sing_macros/README.md
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+# Sing Macros
+
+Sub-crate of [Sing](https://gitea.chaostreff-alzey.de/Thelie/sing).
+Provides macros to generate command line interfaces to rust traits
+using STDIN and STDOUT.
diff --git a/sing_parse/README.md b/sing_parse/README.md
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+# Sing Parse
+
+Sub-crate of [Sing](https://gitea.chaostreff-alzey.de/Thelie/sing).
+Provides the default parser for function calls that happen through STDIN.
diff --git a/sing_util/README.md b/sing_util/README.md
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+# Sing Util
+
+Sub-crate of [Sing](https://gitea.chaostreff-alzey.de/Thelie/sing).
+Provides structs and functions that are used in the inner workings of Sing.