diff --git a/Plugins,-Tools-and-Hardware.md b/Plugins,-Tools-and-Hardware.md
index f23e8a8..319cf36 100644
--- a/Plugins,-Tools-and-Hardware.md
+++ b/Plugins,-Tools-and-Hardware.md
@@ -53,6 +53,9 @@ Chartjs integration.
 https://gitlab.com/dvenkatsagar/reveal-chart
 ([Demo](https://dvenkatsagar.github.io/prez/reveal-chart.html))
 
+Load external files (HTML).
+https://github.com/calevans/external
+
 ## Tools
 Useful tools for working with reveal.js.