diff --git a/README.md b/README.md
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+++ b/README.md
@@ -68,7 +68,7 @@
   * Chipmunk2D 
 * Supported 3D physics engines:
   * Bullet Physics SDK
-* **ImGui 1.88 integrated, easy to write game embedded tools, very easy to use, read [ImGui](extensions/ImGui/README.md) for more info**
+* **ImGui 1.87 integrated, easy to write game embedded tools, very easy to use, read [ImGui](extensions/ImGui/README.md) for more info**
 
 [Read Full changes since cocos2d-x-4.0](CHANGELOG)
 
diff --git a/extensions/README.md b/extensions/README.md
new file mode 100644
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@@ -0,0 +1,20 @@
+# The axmol extensions
+
+## DragonBones
+
+- Upstream: NA
+- Version: 4.5
+- License: MIT
+
+## GUI
+
+- Upstream: NA
+- Version: axmol-1.0
+- License: MIT
+
+## ImGui
+
+- Upstream: https://github.com/ocornut/imgui
+- Version: 1.88 on branch docking
+- License: MIT
+