The best IoT Platform alternative to Home Assistant is openHAB, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Home Assistant and three of them are IoT Platforms so hopefully you can find a suitable replacement. Other interesting IoT Platform alternatives to Home Assistant are Mi Home and Switchur.
openHAB is a Java-based open-source home automation platform that integrates and combines a vast range of different smart home systems and technologies into one single solution.
Combining triggers using IFTTT, Zapier, and Microsoft Flow automations can be challenging. Switchur is the answer. Because every orchestra needs a good conductor.
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Years of experience and dozens of active developers and a huge community made openHAB what it is today - an amazingly flexible center for your smart home. A broad technology support is crucial for a successful smart home setup. With almost 200 add-ons openHAB can talk to nearly everything out there! With it's easy setup and the diverse user interfaces it offers everything needed for small homes up to big office buildings.