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Tasmota
Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
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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.
You could strap a magnetometer to a "dumb" weather vane, but I don't think Tasmota supports any magnetometers unless you want to do a PR. I know there have been a few attempts to add the HMC/QMC5883 sensors in the past, like this.
Outside of that, any of the consumer weather stations (or cheaper rebadged options) that transmit via RF433 could be picked up with a cheap SDR dongle and converted to MQTT topics using rtl_433 for use within Tasmota.