diff --git a/research/computing/services.md b/research/computing/services.md
index 18afcf5639038fa94a9abc3cb1bf4d8cfa4c731e..0a87dc9019170bd29efce457b164e519d2edbad4 100644
--- a/research/computing/services.md
+++ b/research/computing/services.md
@@ -392,6 +392,8 @@ Static:
 * [Decidim](https://decidim.org/): digital platform for citizen participation.
   Free/libre, open and safe technology. With all democratic guarantees.
   Reprogramming democracy is now possible with Decidim.
+* [Helios Voting / Helios Election System](https://vote.heliosvoting.org/): "verifiable online
+  elections" ([code](https://github.com/benadida/helios-server)).
 
 ## Email