diff --git a/user-doc/Intro.txt b/user-doc/Intro.txt
index fdf050b08171517566084bb49ba5979fd8b68fd3..cbd390db441f71e02eabc1ca340ea55b9412b7ea 100644
--- a/user-doc/Intro.txt
+++ b/user-doc/Intro.txt
@@ -36,7 +36,9 @@ As far as we know, the following MD codes can be used with PLUMED out of the box
 - [IPHIGENIE](http://sourceforge.net/projects/iphigenie/).
 - [AceMD](http://www.multiscalelab.org/acemd/), see [this link](https://github.com/tonigi/ACEMD-PLUMED).
 - [OpenMM](http://openmm.org), using the [openmmp-plumed plugin](http://github.com/peastman/openmm-plumed).
-- [DL_POLY4](http://www.scd.stfc.ac.uk//research/app/ccg/software/DL_POLY/44516.aspx).
+- [DL_POLY4](https://www.scd.stfc.ac.uk/Pages/DL_POLY.aspx).
+- [VNL-ATK](https://quantumwise.com), see [this link](https://docs.quantumwise.com/tutorials/metadynamics_with_plumed/metadynamics_with_plumed.html).
+- [ABIN](https://github.com/PHOTOX/ABIN).
 
 Please refer to the documentation of the MD code to know how to use it with the latest PLUMED release.
 If you maintain another MD code that is PLUMED-ready let us know and we will add it to this list.