diff --git a/README.md b/README.md
index a4e93da..832e7dd 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,7 @@ _Source:_ [Google Developers - Progressive Web Apps](https://developers.google.c
 * [Dev.Opera](https://dev.opera.com/)
 * [DevSpace](https://app.devspace.io/)
 * [Expense Manager](https://demo.vaadin.com/expense-manager/)
+* [Exterium](https://www.extrange-labs.com/exterium/)
 * [FF-Platfrom-Status](https://platform-status.mozilla.org)
 * [Firefox Platform Status](https://platform-status.mozilla.org/)
 * [Flipkart Lite](http://www.flipkart.com) ([eng blog post](https://medium.com/progressive-web-apps/building-flipkart-lite-a-progressive-web-app-2c211e641883), [case study](https://developers.google.com/web/showcase/2016/flipkart))