Don't know if it qualifies as self-hosted but Web Maker is like an offline Codepen packaged as a Chrome extension: https://chrome.google.com/webstore/detail/we

Don't know if it qualifies as self-hosted but Web Maker is like an offline Codepen packaged as a Chrome extension: https://chrome.google.com/webstore/detail/web-maker/lkfkkhfhhdkiemehlpkgjeojomhpccnh/ https://chrome.google.com/webstore/detail/web-maker/lkfkkhfh... https://github.com/chinchang/web-maker/ https://github.com/chinchang/web-maker/