English
Español
Français
Português
日本語
简体中文
한국인 No user reviews found
Best exten Alternatives
Here are some Firefox add-ons that are similar to exten:
YouTube Speed Tweak
pengo
4 5.00 
(1) 
Faster Youtube Playback Speed
Preyum Kumar
223 3.00 (1) 
youtube speed control shortcut
mln
6 0.00 (0) 
YouTube Speed Ctrl
Roger
1 0.00 (0) YouTube Speed Master
pets
49 0.00 (0) 0.05 + - video speed controller
Ariyul İstanbul
1 0.00 (0) 
YouTube Speed Keys
Megahed
6 5.00 (1) 
YouTube Video Speeds++
NaeemBolchhi
5 0.00 (0) 
YouTube Custom Playback Speed
Chris
12 0.00 (0) 
MarkN Video Speed
MarkN
1 0.00 (0) 
YouTube Speed Controller
Samuel Li
1K 4.08 (37) 
Video Playback Speed Extension
asdqdsa
2 0.00 (0)