The top 10 image APIs reviewed are Instagram API, Bing Image Search API, Imagga API, Everypixel Image Recognition API, Aspose imaging Cloud API, Web search API, Img4me API, Meme Generator API, Thumbnail.ws API, and Imgur API. These APIs offer various features such as facial recognition, image processing, converting text to images, creating memes, taking screenshots, and social media image hosting. The free versions of these APIs have limitations on the number of requests per day, while paid plans vary in price depending on the number of requests and usage. The popularity scores range from 5.5/10 for Instagram API to 9.9/10 for Imgur API.