Hello, I released a fully new version (v2.0) of my web server here : https://github.com/jczic/MicroWebSrv2. Open source MIT, fully asynchronous, more robust, more fast and more efficient on Pycom modules. It is delivered with a good documentation. For captive portal, you can use a simple DNS server here (see readme) : https://github.com/jczic/MicroDNSSrv Thank you for your support and feedback. ☺️