A web application and an API which generates randomly generated pixel monsters in SVG format. It can be used to create profile pictures. Has a REST API: https://pixelencounter.com/Api
2 requests per second, 10000 requests per 30 days per IP address.
A Pixel Art Editor. Self hosted. Single page app. Draw old-school pixel art by hand in your web browser, save the images locally. Can assemble frames into an animated gif. Can even import an image file and turn it into an approximate pixel art image. Can be installed as a progressive web app but good luck getting those to work.
A website which is an online 8-bit art studio. Draw pixel art in your web browser, and download it as image files for later!