+interface for other microcontroller systems. Note that we don't actually
+sell TeleDongle by itself, it is included in our
+[Starter Pack](http://shop.gag.com/ground-stations/starter-pack.html) offering.
+
+* [TeleBT](TeleBT) is a variation on [TeleDongle](TeleDongle/) that adds
+[Bluetooth](http://www.bluetooth.com) as an alternative to USB. Particularly
+useful with the [AltosDroid](http://www.altusmetrum.org/AltosDroid/) app for
+Android devices, or a compatible iOS application available for sale from
+our friends at [Iron Sheep Productions](http://altosui.ironsheep.biz/).
+
+* [TeleGPS](TeleGPS/)
+is a GPS tracker and logger using the uBlox Max 7Q GPS receiver for
+high dynamic performance and a combination digital/APRS transmitter.