diff --git a/README.md b/README.md
index 1fe6578..c226429 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,9 @@ The name also happens to abbreviate to [NB](https://en.wikipedia.org/wiki/Nota_b
 
 * All data is stored locally, for now using [localStorage](https://developer.mozilla.org/en/docs/Web/API/Window/localStorage).
 * The data can be exported to- or imported from a plain text file in a simple JSON format.
-* The data can also be automatically backed up to a local disk (with the help of [Nullboard Agent](https://nullboard.io/backups)).
+* The data can also be automatically backed up to a local disk with the help of:
+  * [Nullboard Agent](https://nullboard.io/backups) - a native Windows app
+  * [Nullboard Agent Express Port](https://github.com/justinpchang/nullboard-agent-express) - an express.js-based portable app
 
 ## Beta