diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,2 +1,9 @@
 # MetidaBase.jl
+
 Metida base package.
+
+Used for:
+
+* [Metida.jl](https://github.com/PharmCat/Metida.jl)
+* [MetidaFreq.jl](https://github.com/PharmCat/MetidaFreq.jl)
+* [MetidaNCA.jl](https://github.com/PharmCat/MetidaNCA.jl)