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WorkOS
The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
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esphome
ESPHome is a system to control your ESP8266/ESP32 by simple yet powerful configuration files and control them remotely through Home Automation systems.
I use WifiManager (https://github.com/tzapu/WiFiManager) .. it will setup the device as an access point you connect to and configure the wifi.
I made this as an experiment and now I use it in all of my projects: https://gitlab.com/prexus/wifi-manager
If you are making anything close to a sensor or a controller, you should seriously consider using ESPHome. Wifi creds, fall back hot-spot, OTA, and more are just handled. You'll find yourself configuring rather than coding. But, if you really need to code, you can still do it.
Looks like it https://github.com/espressif/esp-rainmaker/tree/master/components/esp_rainmaker/server_certs