diff --git a/utilities/compatiblizemod.py b/utilities/compatiblizemod.py
new file mode 100755
index 0000000..46bdeda
--- /dev/null
+++ b/utilities/compatiblizemod.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python3
+
+import sys
+import os
+
+def error(msg):
+    sys.stderr.write("{}\n".format(msg))
+    sys.stderr.flush()
+
+def add_depends(mod_path):
+    depends_path = os.path.join(mod_path, "depends.txt")
+    if os.path.isfile(depends_path):
+        error("WARNING: Writing {} will be skipped since it exists."
+              "".format(depends_path))
+        return
+    mod_conf = os.path.join(mod_path, "mod.conf")
+    if not os.path.isfile(mod_conf):
+        error("WARNING: Writing {} will be skipped since {} does"
+              " not exist."
+              "".format(depends_path, mod_conf))
+        return
+    optional_depends = []
+    depends = []
+    lineN = 0
+    with open(mod_conf, 'r') as ins:
+        for rawL in ins:
+            lineN += 1  # Counting numbers start at 1.
+            line = rawL.strip()
+            if len(line) < 1:
+                continue
+            if line.startswith("#"):
+                continue
+            signI = line.find("=")
+            if signI < 0:
+                print("{}:{}: Warning: There is no '='"
+                      "".format(mod_conf, lineN))
+                continue
+            if signI < 1:
+                print("{}:{}: Warning: starts with '='"
+                      "".format(mod_conf, lineN))
+                continue
+            name = line[:signI].strip()
+            value = line[signI+1:].strip()
+            if name == "depends":
+                depends = [depend.strip() for depend in value.split(",")]
+            elif name == "optional_depends":
+                optional_depends = [depend.strip() for depend in value.split(",")]
+    print("")
+    mod_dir_name = os.path.basename(mod_path)
+    print("mod: {}".format(mod_dir_name))
+    print("* depends: {}".format(depends))
+    print("* optional_depends: {}".format(optional_depends))
+    with open(depends_path, 'w') as outs:
+        for depend in depends:
+            outs.write("{}\n".format(depend))
+        for depend in optional_depends:
+            outs.write("{}?\n".format(depend))
+    print("* wrote {}/depends.txt".format(mod_dir_name))
+
+
+if __name__ == "__main__":
+    parent = os.path.realpath(".")
+    modpack_conf = os.path.join(parent, "modpack.conf")
+    if os.path.isfile(modpack_conf):
+        for sub in os.listdir(parent):
+            subPath = os.path.join(parent, sub)
+            if sub.startswith("."):
+                continue
+            if not os.path.isdir(subPath):
+                continue
+            add_depends(subPath)
+    else:
+        add_depends(parent)