Bosch IoT Suite might be a bit more popular than openHAB. We know about 1 link to it since March 2021 and only 1 link to openHAB. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
You can start on a general home automation like openhab.org. Source: almost 2 years ago
They do more than that, e.g. IoT and PaaS stuff: https://developer.bosch-iot-suite.com/. - Source: Hacker News / almost 3 years ago
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