diff --git a/docs/opensource-users.md b/docs/opensource-users.md
index 17483f8b..86acd16a 100644
--- a/docs/opensource-users.md
+++ b/docs/opensource-users.md
@@ -103,6 +103,9 @@ A high available cloud native micro-service application management platform impl
 ### [ArangoDB](https://github.com/arangodb/arangodb)
 ArangoDB is a native multi-model database with flexible data models for documents, graphs, and key-values.
 
+### [d-SEAMS](https://github.com/d-SEAMS/seams-core)
+Open source molecular dynamics simulation structure analysis suite of tools in modern C++.
+
 ### [Giada - Your Hardcore Loop Machine](https://github.com/monocasual/giada)
 Minimal, open-source and cross-platform audio tool for live music production.