AppDaemon vs Zwave-JS Server
A side-by-side comparison of two self-hosted home automation options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | AppDaemon | Zwave-JS Server |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 76 · Good | 74 · Good |
| Category | Home Automation | Home Automation |
| License | Apache-2.0 | Apache-2.0 |
| Language | Python | TypeScript |
| Setup difficulty | Medium | Medium |
| Min. RAM | 256 MB | 128 MB |
| Deployment | docker, bare-metal | docker, binary |
| GitHub stars | ★ 969 | ★ 164 |
| First released | 2016 | 2021 |
| Replaces | SmartThings | SmartThings |
What are AppDaemon and Zwave-JS Server?
AppDaemon
AppDaemon is a loosely coupled, multi-threaded, sandboxed Python execution environment for writing automation apps for Home Assistant and other systems. It enables complex logic beyond YAML automations.
- Python automation apps
- Sandboxed execution
- Dashboards via HADashboard
- Works with Home Assistant
Zwave-JS Server
Z-Wave JS Server is a small server that exposes the Z-Wave JS driver over a WebSocket API. It allows multiple clients, such as Home Assistant, to control a Z-Wave network simultaneously.
- WebSocket Z-Wave API
- Multi-client support
- Built on Z-Wave JS
- Lightweight server
AppDaemon vs Zwave-JS Server: key differences
AppDaemon is written in Python, while Zwave-JS Server is built with TypeScript. Zwave-JS Server is the lighter option, starting around 128 MB of RAM against 256 MB for AppDaemon. AppDaemon is the more established project (first released 2016), while Zwave-JS Server arrived in 2021. AppDaemon has the considerably larger community, at 969 GitHub stars versus 164.
Why pick each one
Choose AppDaemon if…
- Powerful programmatic automations
- Full Python flexibility
Watch out for
- Requires Python knowledge
- Extra component to maintain
Choose Zwave-JS Server if…
- Decouples driver from clients
- Reliable
Watch out for
- Headless, no UI
- Z-Wave only
Frequently asked questions
Is AppDaemon or Zwave-JS Server better?
Neither is universally better. AppDaemon has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are AppDaemon and Zwave-JS Server free and open-source?
Yes. AppDaemon is licensed under Apache-2.0 and Zwave-JS Server under Apache-2.0. Both can be self-hosted at no software cost.
Can I run AppDaemon and Zwave-JS Server with Docker?
AppDaemon: yes. Zwave-JS Server: yes.
Which is lighter on resources, AppDaemon or Zwave-JS Server?
Zwave-JS Server has the smaller minimum footprint at 128 MB of RAM, compared to about 256 MB for AppDaemon. Real-world usage depends on library size, user count, and enabled features.