This is an ACME client for ESP (ESP32, etc) devices, so your IoT can fetch their own certificate for secure communication. ACME is a protocol (see <a href="https://tools.ietf.org/html/rfc8555">RFC8555</a>) for automatic certificate management. Sites such as letsencrypt.org allow you to obtain free (no charge) certificates in an automated way using the ACME protocol. Now also supporting the ARI protocol, to learn about when to renew a certificate.
Standalone ESP-IDF captive portal component. Registers all standard OS captive-portal detection endpoints on an esp_http_server instance and redirects clients to the device's built-in web interface with a single function call. Supports iOS, macOS, Android, Windows, Firefox, and Chrome.