diff --git a/.gitmodules b/.gitmodules
index d405f74..d94f615 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -76,3 +76,6 @@
 [submodule "plugins/ZZC"]
 	path = plugins/ZZC
 	url = https://github.com/zezic/ZZC.git
+[submodule "plugins/repelzen"]
+	path = plugins/repelzen
+	url = https://github.com/wiqid/repelzen.git
diff --git a/doc/.generate-plugin-licenses.sh b/doc/.generate-plugin-licenses.sh
new file mode 100755
index 0000000..b7d1e19
--- /dev/null
+++ b/doc/.generate-plugin-licenses.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -e
+
+cd $(dirname $0)
+
+for p in ../plugins/*/plugin.json; do
+    name=$(jq -crM .name ${p})
+    license=$(jq -crM .license ${p})
+    echo "| ${name} | ${license} |"
+done
diff --git a/doc/LICENSES.md b/doc/LICENSES.md
new file mode 100644
index 0000000..d81ce35
--- /dev/null
+++ b/doc/LICENSES.md
@@ -0,0 +1,38 @@
+# LICENSES
+
+## CODE LICENSE / BINARY
+
+While Cardinal itself is licensed under GPLv3+, some modules/plugins used by it are not.  
+And since Cardinal builds the entire Rack and modules as a static library,
+the more restrictive of the **code licenses** will apply to the final binary.  
+
+Bellow follows a list of all code licenses used in Cardinal and linked submodules.
+
+| Name                  | License(s)            | Additional notes |
+|-----------------------|-----------------------|------------------|
+| Carla                 | GPL-2.0-or-later      | Used as plugin host within Cardinal|
+| DPF                   | ISC, GPL-2.0-or-later | Used as the plugin framework, VST2 binary GPLv2+ licensed |
+| Rack                  | GPL-3.0-or-later      | The actual Rack code, internal dependencies are compatible with GPLv3+ |
+| AS                    | MIT                   | |
+| Amalgamated Harmonics | BSD-3-Clause          | |
+| Animated Circuits     | BSD-3-Clause          | |
+| Atelier               | GPL-3.0-only          | |
+| Audible Instruments   | GPL-3.0-or-later      | |
+| Befaco                | GPL-3.0-or-later      | |
+| Bidoo                 | GPL-3.0-only          | |
+| Bogaudio              | GPL-3.0-or-later      | |
+| Cardinal              | GPL-3.0-or-later      | |
+| DrumKit               | CC0-1.0               | |
+| E-Series              | GPL-3.0-or-later      | |
+| Fundamental           | GPL-3.0-or-later      | |
+| Grande                | GPL-3.0-or-later      | |
+| Impromptu             | GPL-3.0-only          | GPLv3+ change request https://github.com/MarcBoule/Geodesics/issues/4 |
+| JW-Modules            | BSD-3-Clause          | |
+| MindMeld              | GPL-3.0-only          | GPLv3+ change request https://github.com/MarcBoule/Geodesics/issues/4 |
+| Valley                | GPL-3.0-or-later      | |
+| ZZC                   | GPL-3.0-only          | GPLv3+ change request https://github.com/zezic/ZZC/issues/86 |
+| ZetaCarinae           | GPL-3.0-or-later      | |
+| cf                    | BSD-3-Clause          | |
+| mscHack               | BSD-3-Clause          | |
+| Rackwindows           | MIT                   | |
+| repelzen              | GPL-3.0-or-later      | |
diff --git a/plugins/Makefile b/plugins/Makefile
index cda6ff7..8ed70cb 100644
--- a/plugins/Makefile
+++ b/plugins/Makefile
@@ -454,6 +454,14 @@ MSCHACK_CUSTOM_PER_FILE = MAIN_SYNC_CLOCK FILTER_STRUCT FILTER_PARAM_STRUCT OSC_
 
 PLUGIN_FILES += $(filter-out rackwindows/src/plugin.cpp,$(wildcard rackwindows/src/*.cpp))
 
+# --------------------------------------------------------------
+# repelzen
+
+PLUGIN_FILES += $(filter-out repelzen/src/repelzen.cpp,$(wildcard repelzen/src/*.cpp))
+
+# modules/types which are present in other plugins
+REPELZEN_CUSTOM = Blank Mixer tanh_pade
+
 # --------------------------------------------------------------
 # ValleyAudio
 
@@ -952,6 +960,13 @@ $(BUILD_DIR)/rackwindows/%.cpp.o: rackwindows/%.cpp
 		-Wno-implicit-fallthrough \
 		-Wno-sign-compare
 
+$(BUILD_DIR)/repelzen/%.cpp.o: repelzen/%.cpp
+	-@mkdir -p "$(shell dirname $(BUILD_DIR)/$<)"
+	@echo "Compiling $<"
+	$(SILENT)$(CXX) $< $(BUILD_CXX_FLAGS) -c -o $@ \
+		$(foreach m,$(REPELZEN_CUSTOM),$(call custom_module_names,$(m),repelzen)) \
+		-DpluginInstance=pluginInstance__repelzen
+
 $(BUILD_DIR)/ValleyAudio/%.cpp.o: ValleyAudio/%.cpp
 	-@mkdir -p "$(shell dirname $(BUILD_DIR)/$<)"
 	@echo "Compiling $<"
diff --git a/plugins/plugins.cpp b/plugins/plugins.cpp
index ab98960..16071ad 100644
--- a/plugins/plugins.cpp
+++ b/plugins/plugins.cpp
@@ -289,6 +289,15 @@ extern Model *modelMaude_221;
 // rackwindows
 #include "rackwindows/src/plugin.hpp"
 
+// repelzen
+#define modelBlank modelrepelzenBlank
+#define modelMixer modelrepelzenMixer
+#define tanh_pade repelzentanh_pade
+#include "repelzen/src/repelzen.hpp"
+#undef modelBlank
+#undef modelMixer
+#undef tanh_pade
+
 // ValleyAudio
 #include "ValleyAudio/src/Valley.hpp"
 
@@ -334,6 +343,7 @@ Plugin* pluginInstance__JW;
 extern Plugin* pluginInstance__MindMeld;
 extern Plugin* pluginInstance__mscHack;
 Plugin* pluginInstance__rackwindows;
+Plugin* pluginInstance__repelzen;
 Plugin* pluginInstance__ValleyAudio;
 Plugin* pluginInstance__ZetaCarinaeModules;
 Plugin* pluginInstance__ZZC;
@@ -1190,6 +1200,27 @@ static void initStatic__rackwindows()
     }
 }
 
+static void initStatic__repelzen()
+{
+    Plugin* const p = new Plugin;
+    pluginInstance__repelzen = p;
+
+    const StaticPluginLoader spl(p, "repelzen");
+    if (spl.ok())
+    {
+#define modelBlank modelrepelzenBlank
+#define modelMixer modelrepelzenMixer
+        p->addModel(modelBlank);
+        p->addModel(modelBurst);
+        p->addModel(modelFolder);
+        p->addModel(modelErwin);
+        p->addModel(modelWerner);
+        p->addModel(modelMixer);
+#undef modelBlank
+#undef modelMixer
+    }
+}
+
 static void initStatic__ValleyAudio()
 {
     Plugin* const p = new Plugin;
@@ -1274,6 +1305,7 @@ void initStaticPlugins()
     initStatic__MindMeld();
     initStatic__mscHack();
     initStatic__rackwindows();
+    initStatic__repelzen();
     initStatic__ValleyAudio();
     initStatic__ZetaCarinaeModules();
     initStatic__ZZC();
diff --git a/plugins/repelzen b/plugins/repelzen
new file mode 160000
index 0000000..4b8790c
--- /dev/null
+++ b/plugins/repelzen
@@ -0,0 +1 @@
+Subproject commit 4b8790cde8ad0ae5e0af95929a4d5261ade5d2c9
diff --git a/plugins/res/repelzen b/plugins/res/repelzen
new file mode 120000
index 0000000..fdb3c71
--- /dev/null
+++ b/plugins/res/repelzen
@@ -0,0 +1 @@
+../repelzen/res
\ No newline at end of file