diff --git a/README.md b/README.md
index 2782423a..98bd277a 100644
--- a/README.md
+++ b/README.md
@@ -290,3 +290,6 @@ Software using MD4C:
 
 * [8th](https://8th-dev.com/):
   Cross-platform concatenative programming language.
+
+* [MarkDown Monolith Assembler](https://github.com/1Hyena/mdma):
+  A command line tool for building browser-based books.