diff --git a/README.md b/README.md
index 9cdeb8c..8bc46f7 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
 A rewrite of the original CAD package [`sdfx`](https://github.com/deadsy/sdfx) for generating 2D and 3D geometry using [Go](https://go.dev/).
 
 ## Highlights
-* GUI with real-time rendering using [sdf3ui](https://github.com/soypat/sdf3ui).
+* GUI with real-time rendering using [sdf3ui](https://github.com/soypat/sdf3ui) (or [SDF Viewer](https://github.com/Yeicor/sdf-viewer-go)).
 * 3d and 2d objects modelled with signed distance functions (SDFs).
 * Minimal and idiomatic API.
 * Render objects as triangles or save to STL, 3MF(experimental) file format.
@@ -130,4 +130,4 @@ None planned.
 ## Logo work
 Gopher rendition by [Juliette Whittingslow](https://www.instagram.com/artewitty/).  
 Gopher design authored by [Renée French](https://www.instagram.com/reneefrench)
-is licensed by the Creative Commons Attribution 3.0 licensed.
\ No newline at end of file
+is licensed by the Creative Commons Attribution 3.0 licensed.