diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..5ab2fc2
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,6 @@
+[submodule "bilm-tf"]
+	path = bilm-tf
+	url = https://github.com/m-stoeckel/bilm-tf
+[submodule "NGramTagger"]
+	path = NGramTagger
+	url = https://github.com/m-stoeckel/NGramTagger.git
diff --git a/NGramTagger b/NGramTagger
new file mode 160000
index 0000000..492cd11
--- /dev/null
+++ b/NGramTagger
@@ -0,0 +1 @@
+Subproject commit 492cd1157fba05e331261eb91c60e0a42c47825c
diff --git a/bilm-tf b/bilm-tf
new file mode 160000
index 0000000..e4ad7e8
--- /dev/null
+++ b/bilm-tf
@@ -0,0 +1 @@
+Subproject commit e4ad7e8f25bf0f52a58bef96997840616585266d