Jimp - Jimp is an image processing library written entirely in JavaScript for Node.
OpenCV - OpenCV is the world's biggest computer vision library
IMG.LY - Power Your Apps with IMG.LY | The Leading Provider of Design, Photo, and Video Editing SDKs
Clarifai - The World's AI
Pixolution - Pixolution is an AI powered visual search engine, with custom training for specific image collections.
Google Vision AI - Cloud Vision API provides a comprehensive set of capabilities including object detection, ocr, explicit content, face, logo, and landmark detection.