diff --git a/.gitmodules b/.gitmodules
index 613a669e..ee70e872 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -6,3 +6,7 @@
 	path = tools/rusty-book
 	url = https://github.com/rustlang-cn/rusty-book.git
 	branch = gh-pages
+[submodule "tools/keyboard-mouse-tester"]
+	path = tools/keyboard-mouse-tester
+	url = https://github.com/shawon9324/keyboard-mouse-tester-webApp.git
+	branch = main
diff --git a/tools/keyboard-mouse-tester b/tools/keyboard-mouse-tester
new file mode 160000
index 00000000..e24344d4
--- /dev/null
+++ b/tools/keyboard-mouse-tester
@@ -0,0 +1 @@
+Subproject commit e24344d463fba8c91bd4f0a8707aae0da8c60449