http://www.coastalwfs.com/resources.html

http://www.sizes.com/units/janka.htm

http://uberdense.com/

Disclaimer: Hardness does not necessarily correspond to density, stiffness, sustain, or any tonal properties. It's how much force it takes to make a certain size dent in the wood, measured in pound-feet. I think it is likely to correspond to fretboard durability.

Here's the list with only Warmoth woods:

Ebony 3220

Canary 3200

Brazilian Rosewood 3000

Bloodwood 2900

Bocote 2200

Ziricote 2200

Bubinga 1980

Purpleheart 1860

Goncalo Alves 1850

Rosewood 1780

Pau Ferro 1780

Padouk 1725

Wenge 1630

Zebrawood 1575

Hard Maple 1450

Cocobolo 1136

Teak 1000

Lacewood 840

Mahogany 800

Korina 480

Basswood 410

Balsa 100

Ebony 3220

Canary 3200

Brazilian Rosewood 3000

Bloodwood 2900

Bocote 2200

Ziricote 2200

Bubinga 1980

Purpleheart 1860

Goncalo Alves 1850

Rosewood 1780

Pau Ferro 1780

Padouk 1725

Wenge 1630

Zebrawood 1575

Hard Maple 1450

Cocobolo 1136

Teak 1000

Lacewood 840

Mahogany 800

Korina 480

Basswood 410

Balsa 100

Soft pine (like 2x4s are made of) is about the same as basswood. Ebony is about eight times harder.