Glitch is a great coding sandbox built by Fog Creek. The main differentiator is that it lets you run build workflows before your app deploys, and it gives you c

Glitch is a great coding sandbox built by Fog Creek. The main differentiator is that it lets you run build workflows before your app deploys, and it gives you control over server logic. Puppeteer is essentially a browser automation tool that has access to Chrome DevTools features. Disclaimer: I work for Google as the tech writer for DevTools. No relationship with Glitch.