Home Assistant

I’ve written before about my frustrations with HomePods and how Google completely squandered Nest. The common thread is that when you depend on a big tech company for your smart home, you’re at their mercy. They can kill products, raise subscription prices, remove features, or just let the software rot. Home Assistant ↗ is the answer to all of that.

What Is Home Assistant#

Home Assistant is open source home automation software that runs locally on your network. It integrates with over 3,400 different devices and services — Zigbee, Z-Wave, Matter, Thread, Bluetooth, Wi-Fi, and pretty much every major smart home brand you’ve heard of. Philips Hue, IKEA, Sonos, Shelly, Lutron, and hundreds more. It all gets unified into a single app with a single dashboard.

The key differentiator is that everything runs locally. Your data stays on your network. Your automations don’t depend on someone else’s cloud server being up. If your internet goes down, your smart home still works. That alone makes it fundamentally different from Google Home, Alexa, or HomeKit, which are all dependent on cloud services to varying degrees. But it’s not just about independence from cloud providers — local control also means everything is noticeably faster. Lights respond instantly. Automations trigger without the round trip to a server halfway across the country. Once you experience the speed difference, going back to cloud-dependent smart home controls feels sluggish.

The one thing people worry about with local-only is remote access. Tailscale solves that completely. It connects you to your home network from anywhere as if you were on your couch, without exposing anything to the public internet. I’ve written about how well it works with Home Assistant before — it’s a great combo.

It’s also run by the Open Home Foundation ↗, a nonprofit. It can’t be sold or acquired. That matters more than people realize when you’re building infrastructure for your home that you want to last.

Why People Love It#

The community is enormous. Home Assistant was the top open source project by contributors in 2025 ↗ on GitHub. It gets meaningful updates every single month — new integrations, new dashboard features, better automations, voice assistant improvements. It’s actively getting better, which is the opposite of what happens with most smart home platforms over time.

The automation engine is genuinely powerful. You can trigger actions based on time, presence, sensor data, device states, weather, sun position, or basically any combination of conditions you can think of. Turn on the porch lights at sunset. Get a notification if the garage door has been open for more than 10 minutes. Adjust the thermostat when everyone leaves the house. The complexity ceiling is high, but simple automations are easy to set up through the UI without writing any code.

The dashboards are fully customizable and accessible from mobile apps, a web interface, or even cast to a TV. There’s a built-in voice assistant called Assist that runs locally, an energy management system, and you can install additional apps like Node-RED directly through the interface.

But the real reason people love it is control. You own your smart home. No one can change the terms of service on you, raise prices, or shut down the platform. After watching Google kill product after product and Apple let Siri and HomePod stagnate, having something that’s actually in your control is a relief.

I still use Apple Home in addition to Home Assistant. It’s not mutually exclusive. There are advantages to the built-in functionality that Apple Home can offer, and Home Assistant only enhances that. I can even publish incompatible devices to Apple Home by bridging them through Home Assistant.

Why I Use the Home Assistant Green#

You can run Home Assistant on a lot of things — a Raspberry Pi, a VM, a Docker container, an old PC. I ran it in Docker on a Synology NAS for a while and it worked fine for the basics. But running it as a container means you’re running Home Assistant Container, not the full Home Assistant Operating System, and there’s a real difference. Container installs don’t get the app store — which means no one-click installs for things like Node-RED, an MQTT broker, or the file editor. You also lose built-in backups, one-click updates, and out-of-the-box support for Thread and Z-Wave since those are managed by apps that only run on HA OS. You can set all of that up yourself alongside Docker, but at that point you’re managing a bunch of moving parts instead of just running Home Assistant.

The Home Assistant Green ↗ is exactly that. It’s a small box with a quad-core ARM processor, 4 GB of RAM, and 32 GB of eMMC storage. It comes with Home Assistant already installed. You plug in power, plug in Ethernet, and it’s running. That’s the whole setup.

No flashing SD cards. No configuring Docker. No fighting with a Raspberry Pi that’s also trying to run Pi-hole and three other things. No VM overhead. It’s a dedicated appliance that does one thing well.

At $159, it’s not the cheapest option. A Raspberry Pi can be had for less. But the Green removes every possible friction point from the setup. It comes with a proper power supply, a passive aluminum heatsink so there’s no fan noise, and eMMC storage instead of an SD card — which matters because SD cards in Raspberry Pis are notorious for failing over time. The Green is just more reliable hardware for a system that ideally runs 24/7 for years.

The monthly updates install through the web UI with one click. Backups are built in. If you want to add Zigbee or Thread support, you plug in a Home Assistant Connect ZBT-2 ↗ USB stick. It also works with your existing Apple HomeKit, Google Home, and Alexa setups, so you can migrate gradually without ripping everything out at once.

The whole experience is closer to setting up a consumer router than building a Linux server. That’s the point. I want my smart home platform to be something I configure once and then it just works in the background, not something I have to babysit. The Green delivers on that.

If you’re frustrated with the state of smart home platforms from big tech, or if you’ve been curious about Home Assistant but didn’t want to deal with the Raspberry Pi setup, the Green is the easiest on-ramp. Plug it in, open the app, and you’re running.