diff --git a/README.md b/README.md
index 6d64a7b..c1e4d68 100644
--- a/README.md
+++ b/README.md
@@ -71,6 +71,12 @@ https://github.com/ashima/webgl-noise Perlin Noise
 http://www.iquilezles.org/live/index.htm
 http://www.iquilezles.org/www/index.htm
 
+## Tools
+https://www.shadertoy.com/
+http://www.syedrezaali.com/f3-mac-app/
+http://www.syedrezaali.com/store/fragment-osx-app
+
+
 ## Interactive Tutorials
 [Fragment-oundry](http://hughsk.io/fragment-foundry)