+* [LipoCharger](LipoCharger/)
+is a standalone battery charger for the Lithium Polymer batteries used in
+Altus Metrum products.
+
+* [TelePyro](TelePyro/) is a companion board for [TeleMetrum](TeleMetrum/)
+that adds 8 additional pyro channels.
+
+* [TeleScience](TeleScience/) is a companion board for
+[TeleMetrum](TeleMetrum/) that adds 12 channels of thermistor or generic
+analog sensor input, and 5 general purpose I/O lines.