diff --git a/docs/content/development/libraries.md b/docs/content/development/libraries.md
index 22c57f0fb91..d4679703b9b 100644
--- a/docs/content/development/libraries.md
+++ b/docs/content/development/libraries.md
@@ -61,4 +61,11 @@ UIs
 Tools
 ---
 
-* [Insert Segments](../../operations/insert-segment-to-db.html) - A tool that can insert segments' metadata into Druid metadata storage.
\ No newline at end of file
+* [Insert Segments](../../operations/insert-segment-to-db.html) - A tool that can insert segments' metadata into Druid metadata storage.
+
+Community Extensions
+--------------------
+
+These are extensions from the community. (If you would like yours listed please speak up!)
+
+* [acesinc/druid-cors-filter-extension](https://github.com/acesinc/druid-cors-filter-extension) - An extension to enable CORS headers in http requests.