diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..234dc9e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,30 @@
+[submodule "thirdparty/gtest"]
+    path = thirdparty/gtest
+    url = https://github.com/google/googletest.git
+[submodule "thirdparty/boost"]
+	path = thirdparty/boost
+	url = https://github.com/boostorg/boost.git
+[submodule "thirdparty/nonstd/expected-lite"]
+	path = thirdparty/nonstd/expected-lite
+	url = https://github.com/martinmoene/expected-lite.git
+[submodule "thirdparty/nonstd/variant-lite"]
+	path = thirdparty/nonstd/variant-lite
+	url = https://github.com/martinmoene/variant-lite.git
+[submodule "thirdparty/nonstd/optional-lite"]
+	path = thirdparty/nonstd/optional-lite
+	url = https://github.com/martinmoene/optional-lite.git
+[submodule "thirdparty/nonstd/string-view-lite"]
+	path = thirdparty/nonstd/string-view-lite
+	url = https://github.com/martinmoene/string-view-lite.git
+[submodule "thirdparty/fmtlib"]
+	path = thirdparty/fmtlib
+	url = https://github.com/fmtlib/fmt.git
+[submodule "thirdparty/json/nlohmann"]
+	path = thirdparty/json/nlohmann
+	url = https://github.com/nlohmann/json.git
+[submodule "thirdparty/json/rapid"]
+	path = thirdparty/json/rapid
+	url = https://github.com/Tencent/rapidjson.git
+[submodule "fmt"]
+	path = fmt
+	url = https://github.com/fmtlib/fmt.git
diff --git a/thirdparty/boost b/thirdparty/boost
new file mode 160000
index 0000000..112dc72
--- /dev/null
+++ b/thirdparty/boost
@@ -0,0 +1 @@
+Subproject commit 112dc7298874f5e1babba629b4a14a7fd7fe5fae
diff --git a/thirdparty/fmtlib b/thirdparty/fmtlib
new file mode 160000
index 0000000..e69e5f9
--- /dev/null
+++ b/thirdparty/fmtlib
@@ -0,0 +1 @@
+Subproject commit e69e5f977d458f2650bb346dadf2ad30c5320281
diff --git a/thirdparty/json/nlohmann b/thirdparty/json/nlohmann
new file mode 160000
index 0000000..8c391e0
--- /dev/null
+++ b/thirdparty/json/nlohmann
@@ -0,0 +1 @@
+Subproject commit 8c391e04fe4195d8be862c97f38cfe10e2a3472e
diff --git a/thirdparty/json/rapid b/thirdparty/json/rapid
new file mode 160000
index 0000000..973dc9c
--- /dev/null
+++ b/thirdparty/json/rapid
@@ -0,0 +1 @@
+Subproject commit 973dc9c06dcd3d035ebd039cfb9ea457721ec213
diff --git a/thirdparty/nonstd/expected-lite b/thirdparty/nonstd/expected-lite
new file mode 160000
index 0000000..3634b0a
--- /dev/null
+++ b/thirdparty/nonstd/expected-lite
@@ -0,0 +1 @@
+Subproject commit 3634b0a6d8dffcffad4d1355253d79290c0c754c
diff --git a/thirdparty/nonstd/optional-lite b/thirdparty/nonstd/optional-lite
new file mode 160000
index 0000000..2605a4b
--- /dev/null
+++ b/thirdparty/nonstd/optional-lite
@@ -0,0 +1 @@
+Subproject commit 2605a4b13094b0bf7a8ecdcde6d644370105bce5
diff --git a/thirdparty/nonstd/string-view-lite b/thirdparty/nonstd/string-view-lite
new file mode 160000
index 0000000..6e5e519
--- /dev/null
+++ b/thirdparty/nonstd/string-view-lite
@@ -0,0 +1 @@
+Subproject commit 6e5e519d69b4ea99c3095d85d8e1e3ff4d54bbaa
diff --git a/thirdparty/nonstd/variant-lite b/thirdparty/nonstd/variant-lite
new file mode 160000
index 0000000..5015e84
--- /dev/null
+++ b/thirdparty/nonstd/variant-lite
@@ -0,0 +1 @@
+Subproject commit 5015e841cf143487f2d7e2f619b618d455658fab