diff --git a/README.md b/README.md
index c42c375..48b1ea0 100644
--- a/README.md
+++ b/README.md
@@ -160,6 +160,10 @@ This pages are in a rough state. e.g. equations are broken. Don't know why...
 * [Differential Equations](matlab/8/README.md)
 * [Data Analysis](matlab/9/README.md)
 
+
+## Other topics 
+* [Open Source Tools](other/open_source_tools/README.md)
+
 {: .topic-optional}
 Note: I will transfer the old pages to this new place (and update them). It will take some time but it will happen...