diff --git a/README.md b/README.md
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--- a/README.md
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@@ -1,3 +1,6 @@
 # FritzAB2Matrix
 
-A script that reads out the answering machine of a FritzBox in the LAN and posts the messages into an encrypted private chat of the matrix network.
\ No newline at end of file
+A script that reads out the answering machine of a FritzBox in the LAN and posts the messages into an encrypted private chat of the matrix network.
+
+
+Uses the python based cmd-line-tool [matrix-commander](https://github.com/8go/matrix-commander) so the matrix-commander.py in this repo is just a copy of that file to ease testing.