"Awesome javascript in one line of code" - A collection of utilities and helpers following the principle: Keep it as simple as possible in one line of code. See: https://dev.to/martinkr/series/15146
A tiny transparent proxy. The benefit: it adds the CORS-headers! Why? It prevents Cross Domain Errors.
lakka. An asynchronous request accelerator for JSON, text and HTML requests.
Modern visual regression testing. Internal test server.