ACDSee - ACDSee is an image viewer that uses very little system resources, and it has a small, sleek size that won't take up much space on your system.
Glimmer - Fast and light-weight UI components for the web
digiKam - Professional Photo Management with the Power of Open Source
Preact.js - Preact is a fast 3kB alternative to React with the same modern API. Components & Virtual DOM.
Flickr - image and video hosting website
Svelte - Cybernetically enhanced web apps