In alphabetical order:
See: http://airspy.com/quickstart/
RTL stick with stable frequency (for narrow-band applications, e.g. VDL mode 2): RTL-SDR USB stick
RTL stick with 1090 MHz pre-amp built in: FlightAware Pro Stick USB ADS-B Receiver
- see: RTL1090
Start with the RTL1090 software, but be sure to update to dump1090 for greatest capability.
- see: http://www.satsignal.eu/raspberry-pi/dump1090.html
Both USB and TCP/IP versions available. See: http://www.microadsb.com/
See: http://www.modesbeast.com/
See: http://www.airnavsystems.com/radarbox/
Unable to provide data for Mlat
See: http://www.modesbeast.com/
See: http://www.kinetic.co.uk/
See: http://sdrplay.com/platforms.html
For Windows: http://sdrplay.com/windows.html