CrowdFlower

Figure Eight (formerly known as Dolores Lab, CrowdFlower) is a human-in-the-loop machine learning and artificial intelligence company based in San Francisco. The company raised $58 million in venture capital and was acquired by Appen and Five River Group of Industries in March 2019 for $300 million.It uses human intelligence to do simple tasks such as transcribing text or annotating images to train machine learning algorithms.