diff --git a/.gitmodules b/.gitmodules
index 78189fad..12afdfff 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,6 @@
 [submodule "maia-sdr"]
 	path = maia-sdr
 	url = https://github.com/maia-sdr/maia-sdr.git
+[submodule "IQEngine"]
+	path = IQEngine
+	url = https://github.com/IQEngine/IQEngine
diff --git a/IQEngine b/IQEngine
new file mode 160000
index 00000000..6bf550db
--- /dev/null
+++ b/IQEngine
@@ -0,0 +1 @@
+Subproject commit 6bf550db25922ad3218e45d2d129081d3bd233a8
diff --git a/Makefile b/Makefile
index f35950c6..15d31122 100644
--- a/Makefile
+++ b/Makefile
@@ -150,9 +150,28 @@ maia-wasm: buildroot/board/$(TARGET)/maia-wasm/pkg buildroot/board/$(TARGET)/mai
 
 .PHONY: maia-wasm
 
+### IQEngine client ###
+IQEngine/client/build:
+	cd IQEngine/client && npm ci && npm run build
+
+.PHONY: IQEngine/client/build
+
+# IQEngine assets are compressed with xz to save ramfs space
+# maia-httpd uncompresses these on the fly for each request.
+buildroot/board/$(TARGET)/iqengine: IQEngine/client/build
+	rm -rf $@
+	mkdir $@
+	cp $</index.html $@/
+	lz4 -m --best --rm $</assets/*
+	cp $</assets/* $@/
+
+iqengine: buildroot/board/$(TARGET)/iqengine
+
+.PHONY: iqengine
+
 ### Buildroot ###
 
-buildroot/output/images/rootfs.cpio.gz: buildroot/board/$(TARGET)/maia-sdr.ko buildroot/board/$(TARGET)/maia-httpd maia-wasm
+buildroot/output/images/rootfs.cpio.gz: buildroot/board/$(TARGET)/maia-sdr.ko buildroot/board/$(TARGET)/maia-httpd maia-wasm iqengine
 	@echo device-fw $(VERSION)> $(CURDIR)/buildroot/board/$(TARGET)/VERSIONS
 	@$(foreach dir,$(VSUBDIRS),echo $(dir) $(shell cd $(dir) && git describe --abbrev=4 --dirty --always --tags) >> $(CURDIR)/buildroot/board/$(TARGET)/VERSIONS;)
 	make -C buildroot ARCH=arm zynq_$(TARGET)_defconfig
@@ -229,6 +248,8 @@ clean:
 	make -C maia-sdr/maia-hdl clean
 	cd maia-sdr/maia-httpd; cargo clean
 	cd maia-sdr/maia-wasm; cargo clean
+	rm -rf IQEngine/client/build
+	rm -rf IQEngine/client/node_modules
 	rm -f $(notdir $(wildcard build/*))
 	rm -rf build/*
 
diff --git a/buildroot b/buildroot
index c22d37bd..d6840bf0 160000
--- a/buildroot
+++ b/buildroot
@@ -1 +1 @@
-Subproject commit c22d37bda7f8ca37dabcc13798c88618c76010a3
+Subproject commit d6840bf03f785491608d72fd5a276b65fcad4a35
diff --git a/maia-sdr b/maia-sdr
index f0044219..7ddbc80b 160000
--- a/maia-sdr
+++ b/maia-sdr
@@ -1 +1 @@
-Subproject commit f0044219aba16a8a6ca95aab683b5453af7d864d
+Subproject commit 7ddbc80bcef690694a6fce5c49cd48dad9ab017b