+# Rocket Altimeters and Accessories
+* [TeleMetrum](TeleMetrum/)
+is our primary product, a dual-deploy rocketry altimeter with
+GPS and bidirectional RF telemetry link.
+
+* [TeleMini](TeleMini/)
+is a smaller dual-deploy rocketry altimeter with telemetry using only a
+barometric pressure sensor
+
+# Ground Stations
+
+* [TeleDongle](TeleDongle/)
+is a simple RF interface for use in ground stations interacting with rockets
+using [TeleMetrum](TeleMetrum/). It may also be useful as a generic RF
+interface for other microcontroller systems.
+
+# Software
+
+* [AltOS](AltOS/)
+is the name of the firmware and related utilities that Keith maintains for
+the set of hardware projects here.
+