0) My findings on the CAN bus
Developer: turbo2ltr
Debut: 2/20/2011
Although not a physical product, I put this at the top of this list since turbo2ltr

1) SOC meter (The original gid-meter)

Developer: garygid
Debut: 7/26/2011
Monitors EVcan or CARcan (not simultaneously)
Displays:
- SOC
%Gids
Gids
Pack Volts
Pack Amps
Pack kW
Tire Pressure
CAnbus logging
2) Arduino

Developer: lincomatic
Debut: 9/7/2011
Monitors: EVcan
Displays:
- Gids
%Gids
Pack Volts
Pack Amps
3) LeafCAN


Developer: lincomatic
Debut: 2/18/2012
Monitors EVcan
Displays:
- SOC
%Gids
Gids
kWh
Pack Volts
Pack Amps
Pack kW
DTE
4) WattsLeft

Developer: Turbo3
Debut:4/12/2012
Monitors:
Displays:
- %Gids
Gids
kWh
Pack Volts
Pack Amps
Pack kW
DTE
RPM
5) CANary
Developers: (Open Source) TickTock, garygid, Turbo3, nananaleafman
Debut: 2/11/2013
Monitors: EVcan and CARcan
Displays:
- SOC
SOH
%Gids
Gids
kWh
Ah
Pack Volts
Pack Amps
Pack kW
Cellpair Volts
Battery Temperature
mpkWh history
DTE
12V Battery Volts
Brake Efficiency (friction vs. regen)
Audible braking trainer
Steering, Throttle, & Brake positions
Brake Pressure
Tire pressure
Trip meter
cellpair logging
Full Canbus logging
6) Leaf Spy
Android App
Developer: Turbo3
Debut: 3/20/2013
Monitors: EVcan or CARcan via ELM327
Displays: Pack Volts, Pack Amps, SOC, Ah, cellpair voltages, Pack Temperature, Efficiency, DTE
- SOC
SOH
kWh
Ah
Pack Volts
Pack Amps
Cellpair Volts
Battery Temperature
DTE
12V Battery Volts
Tire Pressure
Trip meter
VIN
Number of charge cycles
Battery cellpair logging
7) LeafDD

Developer: GregH
Debut: 4/26/2013
Monitors: EVcan
Displays:
- SOC
%Gids
Gids
kWh
Ah
Health
Pack Volts
Pack Amps
Pack kW
Cellpair Volts
Battery Temperature
mpkWh history
12V Battery Volts
8) LEAF Logger
Developer: BayBits
Debut: 6/8/2013?
Monitors: EVcan via ELM327
Displays:
- SOC
kWh
Battery Temperature
mpkWh
Speed
Elevation
Trip History