Cropping is used across all modern web applications, Some website requires a particular pixel size of images and you need to crop and resize to fit these preferences.
ImgAreaSelect is a library for creating a rectangular crop of an image, has a photo note feature like Flickr and is based jquery.
Croppie is for easy to implement image cropping functionality, as well as other user interfaces (UI) features. It is best for those who need to view results while working.
Jcrop is a simple image cropper based on Jquery, It is quite powerful and has clean codes, Developers can easily manipulate its functionalities
Croppic is based on jquery and handles all your basic image cropping, dragging, zooming, But it stands out because of its many additional features, one of which can automatically handle image uploads right from your browser.
DarkroomJS handles basic image editing functionalities and is based on FabricJs and Html 5 Canvas
Image Crop is a simple cropper that crops with a predetermined aspect ratio and is based on Jquery and Canvas.
jQuery Guillotine is a simple Jquery Cropper with Clean Drag and Drop functionality and pretty small code
Smartcrop.js built with Vanilla JS, uses content awareness technology to help users crop their images and has its own proprietary algorithm to recognize faces and make good crops after upload.
Tinycrop is built with Vanilla Js and contains a similar version of functionalities you would find in bigger Libraries, It is a healthy choice for developers interested in a faster page speed
React Drop n Crop, built with ReactJs, uses the dropzone library to handle image uploads along with the React Cropper as an image cropping React component.
Cropit, jQuery & canvas-based image cropping plugin which allows users to crop a local image with image zoom and image pan support.
rcrop, is a fully responsive, mobile jQuery image cropper which allows users to resize images on the client-side while preserving the original aspect ratios.