diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..d82f3ba
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,10 @@
+[submodule "third_party/glfw"]
+	path = third_party/glfw
+	url = https://github.com/glfw/glfw.git
+[submodule "third_party/glm"]
+	path = third_party/glm
+	url = https://github.com/g-truc/glm.git
+[submodule "third_party/imgui"]
+	path = third_party/imgui
+	url = https://github.com/ocornut/imgui.git
+	branch = docking
diff --git a/third_party/glfw b/third_party/glfw
new file mode 160000
index 0000000..92dcf4c
--- /dev/null
+++ b/third_party/glfw
@@ -0,0 +1 @@
+Subproject commit 92dcf4ce74f2e2554a98fea09be7c705c17daa5a
diff --git a/third_party/glm b/third_party/glm
new file mode 160000
index 0000000..6f14f47
--- /dev/null
+++ b/third_party/glm
@@ -0,0 +1 @@
+Subproject commit 6f14f4792a0cde5d0cf2c910506724d61cb95834
diff --git a/third_party/imgui b/third_party/imgui
new file mode 160000
index 0000000..83f6686
--- /dev/null
+++ b/third_party/imgui
@@ -0,0 +1 @@
+Subproject commit 83f668625ad45364de71d385aeb6a5dd04bee02e