When building a smart home, one of the most important decisions is choosing the control system that ties everything together. From lighting and climate control to security and entertainment, the platform you select will shape how flexible, future-proof and user-friendly your home becomes.
Below, we compare nine of the most widely used smart-home platforms across DIY, professional, and enterprise-grade systems:
Home Assistant, Homey Pro, Crestron, Control4, Savant, Elan, Josh.ai, openHAB, and KNX.
Home Assistant
Home Assistant is an open-source smart-home platform designed to work with nearly any device or protocol. It runs locally, meaning automations continue to work even if the internet goes down.
Its greatest strength is flexibility: lighting, climate, cameras, energy systems, irrigation, and audio-visual equipment can all be unified under one interface. Advanced automations can be created using visual editors or code, making it suitable for both homeowners and professional integrators.
While it requires more setup than closed systems, it offers long-term independence from vendor lock-in and adapts easily as new technologies emerge.
Best for: Power users, privacy-focused homes, and highly customised smart homes.
Homey Pro
Homey Pro aims to be an easy-to-use hub that supports many wireless protocols such as Zigbee, Z-Wave, Thread and Matter. It provides a consumer-friendly interface with less technical complexity than open-source platforms.
However, its ecosystem and customisation options are more limited. It works best for smaller installations rather than complex whole-home systems with advanced energy or security integration.
Best for: Users wanting multi-protocol support with minimal setup.
Crestron
Crestron is a long-established enterprise and luxury automation platform. It is widely used in large homes, commercial buildings and boardrooms.
The system is highly stable and deeply integrated with professional AV equipment, but it is closed and dealer-programmed. Owners typically cannot make changes themselves without a technician, and upgrades can be costly.
Best for: Ultra-high-end homes requiring complex AV and lighting control.
Control4
Control4 is one of the most popular professionally installed residential automation platforms. It offers polished interfaces and strong multi-room audio and video support.
Like Crestron, it is a closed ecosystem and relies on dealer programming. This ensures consistency and support, but reduces flexibility and long-term adaptability.
Best for: Turnkey smart homes with strong media control.
Savant
Savant focuses heavily on audio-visual integration and Apple-style design. It delivers elegant touch-screen interfaces and works well in luxury environments.
Its hardware-centric design means expansion and changes usually require additional Savant-branded equipment, which can limit device choice.
Best for: High-end homes prioritising design and media control.
Elan
Elan provides a mid-range professional control system positioned between Control4 and fully custom platforms. It integrates lighting, climate, blinds and AV systems into a single interface.
It offers strong reliability, but like most dealer systems, it depends on licensed installers for configuration and upgrades.
Best for: Professionally installed homes needing unified control.
Josh.ai
Josh.ai is primarily a premium voice-control system designed for privacy-focused smart homes. Unlike mainstream assistants, Josh processes most requests locally and integrates with major control systems such as Crestron and Control4.
It is not a complete automation platform on its own, but rather an intelligent voice layer on top of existing systems.
Best for: Luxury homes seeking private, natural voice control.
openHAB
openHAB is another open-source automation platform similar in philosophy to Home Assistant. It supports many integrations and can be run locally without cloud dependence.
While powerful, it has a steeper learning curve and a smaller ecosystem compared to Home Assistant. It remains popular among technical users and commercial automation projects.
Best for: Developers and advanced DIY users.
KNX
KNX is a wired building-automation standard rather than a software platform. It is widely used in Europe and in large custom builds for lighting, climate and shading.
KNX excels in reliability and longevity but lacks modern user interfaces on its own. It is often paired with software platforms like Home Assistant or Crestron to provide visual control and remote access.
Best for: New builds requiring rock-solid wired automation.
Final Thoughts
Each platform has its place. Dealer-installed systems such as Crestron, Control4, Savant and Elan excel in polished interfaces and professional deployment. KNX remains unmatched for wired reliability in new builds. Homey Pro and openHAB suit smaller or more technical projects.
Home Assistant stands out for its ability to bridge all of these worlds, integrating luxury hardware, open protocols, and modern cloud services into one unified system without locking homeowners into a single brand or vendor. Its rapid development and broad device support make it especially well-suited for homes that want to evolve.
Rather than replacing professional systems, platforms like Home Assistant increasingly complement them, acting as the intelligence layer that connects lighting, energy, security and lifestyle automation into one coherent experience.