+* [AltOS](AltOS/)
+is the name of the firmware and related utilities that Keith maintains for
+the set of hardware projects here.
+
+* [TelePyro](TelePyro/) is a planned 8-channel pyro expansion board for
+[TeleMetrum](TeleMetrum/).
+
+* [TeleTerra](TeleTerra) is a planned hand-held ground station for use with
+[TeleMetrum](TeleMetrum/).
+
+* [AltusMetrum](AltusMetrum/)
+was Bdale's original project here, a dual-deploy rocketry altimeter. One
+prototype was built, but never flown. This project is now indefinitely on hold.
+