The best alternatives to Polly are dvel, Yroulette, and Big Decisions. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Polly?
Agree.com— Free e-signature for everyone with invoicing and payments!
Deemr is a social interaction mobile application, designed to gather simple, quick and honest feedback about decisions you need to make, opinions you want to challenge or ideas you want to test. A deem gives the creator control over how to respond to them, it's time-frame, it's anonymously responded, it's audience framed and it is ephemeral.