diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..bb15e00ab
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,15 @@
+[submodule "Documentation"]
+	path = Documentation
+	url = https://github.com/MIRTK/documentation.git
+[submodule "ThirdParty/Boost"]
+	path = ThirdParty/Boost
+	url = https://github.com/MIRTK/Boost.git
+[submodule "ThirdParty/Eigen"]
+	path = ThirdParty/Eigen
+	url = https://github.com/MIRTK/Eigen.git
+[submodule "Packages/Deformable"]
+	path = Packages/Deformable
+	url = https://github.com/MIRTK/Deformable.git
+[submodule "Packages/VolumetricMapping"]
+	path = Packages/VolumetricMapping
+	url = https://github.com/MIRTK/VolumetricMapping.git
diff --git a/Documentation b/Documentation
new file mode 160000
index 000000000..61d4c8d59
--- /dev/null
+++ b/Documentation
@@ -0,0 +1 @@
+Subproject commit 61d4c8d59df3300d04c9ca28443da07d26f10092
diff --git a/Packages/Deformable b/Packages/Deformable
new file mode 160000
index 000000000..e5ec74882
--- /dev/null
+++ b/Packages/Deformable
@@ -0,0 +1 @@
+Subproject commit e5ec74882ca95b9a5e0a82b33b8eecc6ddaa34ae
diff --git a/Packages/VolumetricMapping b/Packages/VolumetricMapping
new file mode 160000
index 000000000..60df13063
--- /dev/null
+++ b/Packages/VolumetricMapping
@@ -0,0 +1 @@
+Subproject commit 60df130638ea56028d488898c27be7b01d73e519
diff --git a/ThirdParty/Boost b/ThirdParty/Boost
new file mode 160000
index 000000000..2f1d8b089
--- /dev/null
+++ b/ThirdParty/Boost
@@ -0,0 +1 @@
+Subproject commit 2f1d8b08916f2fa155533b2158a25d5bd94d82b3
diff --git a/ThirdParty/Eigen b/ThirdParty/Eigen
new file mode 160000
index 000000000..0c1d46447
--- /dev/null
+++ b/ThirdParty/Eigen
@@ -0,0 +1 @@
+Subproject commit 0c1d46447b5a24dbe4e244ef1600ebc50a6b5c68