VisionData.io

VisionData is an image recognition API for building smarter apps with a vision. VisionData API offers endpoints for searching images based on similarity, classification and filtering NSFW content for your application. Developers no need to spend time in developing their own image recognition technology. Concentrate on your application's core functionality, VisionData will take care of the complex image recognition technology. Apply for private beta to get access. (http://visiondata.io)