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Best CoolKeys Alternatives
Here are some Firefox add-ons that are similar to CoolKeys:
Flying keys
TiffanyF
- 0.00 
(0) 
Dark Piano Keys
asfmacdude
16 5.00 (2) 
Piano Led
Piano Led
- 0.00 (0) 
Grey Piano Keys
jessicrap
- 0.00 (0) 
colorful piano keys
randomsilence
1 0.00 (0) 
PianoTheme15
qesefunda
- 0.00 (0) 
Piano Darkness
gfp6302
- 5.00 (2) 
kinky keys
howsab
- 0.00 (0) 
BigPianoKeys
ChinaLee
- 5.00 (1) 
black-keys
emtune
- 0.00 (0) 
Notes and Keys
cubbaroo2
- 0.00 (0)