If someone wants to offer work to be done on Mechanical Turk, but doesn't want to deal with the complexities of it themselves, or isn't able to directly sign up with Amazon, there are middleman/intermediary requesters who offer to post HITs for another person/business for a fee. I wanted to list in one place the ones I know of so far, both for workers to be aware of, and for anyone who might want to use such a service. Amazon features a number of these companies on their requester information site, as 'technology partners' and 'consulting partners'; some other companies included on those pages might not post HITs themselves, just help with the process, so I'm only listing the ones for which I know their MTurk requester name. General varied types of HITs: MTurk requester name: OCMP, and a bunch of others Customer-facing name: WorkFusion, fka CrowdComputing Systems Notes: See OCMP requester thread and partner page (screenshot). MTurk requester name: Alegion, fka Significant Bits Customer-facing name: Alegion, part of Significant Bits LLC Notes: See Alegion requester thread and partner page (screenshot). In addition to batch work, posts simple single-question polls for Zipinion. MTurk requester name: Mturk Data and Mturk Data2 Customer-facing name: Mturk Data Consultants Notes: See Mturk Data requester thread. Currently posts mostly international academic surveys on the second account, and other random types of HITs on the first account. Operated by turker Joe Miele et al, who has signed the Dynamo guidelines. MTurk requester name: CrowdSource Customer-facing name: CrowdSource, part of Juggle LLC Notes: See CrowdSource WorkStation thread, former CrowdSource requester thread, and partner page (screenshot). Left MTurk in July 2015 due to fee increases; continues to post work on their own site. MTurk requester name: Smartsheet.com Clients Customer-facing name: Smartsheet Notes: Stopped posting on MTurk in mid-Nov 2014, and removed MTurk-related content from their live site. Previously had a partner page (link dead as of Dec 2014). MTurk requester name: CrowdFlower, fka Dolores Labs Customer-facing name: CrowdFlower, fka Dolores Labs Notes: Stopped posting on MTurk in Dec 2013; continues to post work elsewhere for lower compensation. Surveys only: MTurk requester name: SurveyComet Customer-facing name: SurveyComet and TurkPrime, part of 'Crusoe Development, Inc.' Notes: Active on MTurk since 2011, they offer to post researchers' surveys through the SurveyComet account, in addition to tools to help researchers post through their own accounts. MTurk requester name: PickFu Customer-facing name: PickFu Notes: Simple single-question polls. Results from many previous polls are viewable at http://www.pickfu.com/feedback-polls . Active on MTurk since 2009. MTurk requester name: Quiz The Crowd, fka Jillian Jordan Customer-facing name: Quiz The Crowd Notes: Simple single-question polls, created through an iPhone app. MTurk requester name: Title Tester Customer-facing name: TitleTester.com Notes: Simple single-question polls for article/post titles. Audio/video transcription HITs: MTurk requester name: CastingWords Customer-facing name: CastingWords Notes: See partner page (screenshot). MTurk requester name: SpeechInk Customer-facing name: Speechpad Notes: See partner page (screenshot). Image tagging HITs: MTurk requester name: Tagasauris Customer-facing name: Tagasauris Notes: See partner page (screenshot). Usability testing: MTurk requester name: UserBob Customer-facing name: UserBob Notes: Website and Android app testing, with screen/audio recording. See requester thread.