diff --git a/what-s_installed.sh b/what-s_installed.sh
new file mode 100755
index 00000000..39ea575f
--- /dev/null
+++ b/what-s_installed.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+for cat in a ap d l lua n wayland xap y; do
+    cd $cat
+    for p in $(ls -1); do
+	ls /var/adm/packages/ | grep -q $(echo $p | tr -d /) && echo -n "✓: " || echo -n "❌: "
+	echo "$cat/$p"
+    done | sort
+    cd ..
+done