react-simple-image-comparator
The Image Comparison Slider provides a smooth and intuitive way to compare images. With this component, you can easily compare two images using a slider to adjust the visibility of each image, simply provide your two images and start comparing.
deep-match2
Check if two values deeply match (optionally with arrayOrderMatters)
simplystring-comparision
Simplified solution to the two string comparision problem. Returns a result between 0 and 1 for how similar two strings are. 0 - not very similar; closer to 1 - very similar.