Features

	Async	Queues	Delayed	Priorities	Timeout	Retries
Backburner	Yes	Yes	Yes	Yes	Job	Global
Delayed Job	Yes	Yes	Yes	Job	Global	Global
Que	Yes	Yes	Yes	Job	No	Job
Queue Classic	Yes	Yes	Gem	No	No	No
Resque	Yes	Yes	Gem	Queue	Global	Gem
Sidekiq	Yes	Yes	Yes	Queue	No	Job
Sneakers	Yes	Yes	No	Queue	Queue	No
Sucker Punch	Yes	Yes	Yes	No	No	No
Active Job	Yes	Yes	WIP	No	No	No
Active Job Inline	No	Yes	N/A	N/A	N/A	N/A

Notes:

• It seems that Sucker Punch is having some kind of queues for each job class
• I'm not 100% sure of the above. It's what I assumed from their examples