Pixel Art Studio - A purpose-built drawing tool for pixel artists
Rocket - Web Framework for Rust
Aseprite - Aseprite is an art program dedicated to the creation of pixel art.
KiddoPaint - MS Paint in your browser (with emojis 💃😽🎨)
Pixel Art to CSS - Draw and animate pixel art, export the results to CSS
JS Paint - JSPaint is a web-based Microsoft Paint remake