Voices.com is the market leader when it comes to voice overs and voice talent.
The service works like most crowdsourcing services:
I recommend Voices.com for most organisations, entrepreneurs, large and small businesses looking for good quality voice over talent. If you are instead looking for the cheapest possible voice talent, I recommend looking at alternative options like Fiverr or Ghigg.
Welcome to the #1 Marketplace for Voice Over Talent
Find Voice-Over Talent * Connect with professional voice talent - without expensive agency fees. * Post your job free and see great results. * Get proposals in less than an hour.
Voice search by language, gender, age range or union/trade certification, Escrow service, iPhone App, iPad App, Android App, Blackberry App, Rate sheets, Script collections, VoiceMatch recommendation engine, VoiceRank ranking engine
ABC, NBC, ESPN, PBS, The History Channel, The Discovery Channel, Sony Pictures, Audible, Comcast, Bell Canada, Microsoft, Cisco Systems, Western Union, American Airlines, Toyota, Ford and GM