diff --git a/README.md b/README.md
index 959af7cb..16f8c59e 100644
--- a/README.md
+++ b/README.md
@@ -180,6 +180,7 @@ Table of Contents
   * https://www.skylight.io - Free for first 100k requests
   * https://www.appdynamics.com - Free for 24h metrics, application performance management agents limited to one Java, one .NET, one PHP, and one Node.js
   * https://deadmanssnitch.com - Monitoring for cron jobs. 1 free snitch (monitor) - more available if you refer others to sign up
+  * http://caliper.io/ - Monitoring for Single Page Apps
 
 ## Crash / Exception handling