head to head · open source
Home Assistant vs OpenCCU
Home Assistant has 90,832 GitHub stars, 38,710 forks, 3,527 open issues and last shipped yesterday. OpenCCU has 1,833 stars, 221 forks, 189 open issues and last shipped yesterday. Home Assistant leads on adoption by 4,855% (90,832 vs 1,833 stars). Home Assistant is written in Python under Apache-2.0; OpenCCU is written in JavaScript under Apache-2.0. Home Assistant has attracted 43% as many forks as stars, OpenCCU 12%. Home Assistant was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (home-automation, iot), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 20902 open source comparisons
Side by side
| Home Assistant | OpenCCU | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 1.8K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | JavaScript |
| Last push | 2026-09-19 | 2026-09-19 |
| Forks | ⑂ 39K | ⑂ 221 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Home Assistant if
- You weight community size — 91K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick OpenCCU if
- You want the OpenCCU feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches JavaScript
- You evaluated both and OpenCCU fits your workflow better
About Home Assistant
Home Assistant is an open source home automation platform that runs locally on devices such as Raspberry Pi or a personal server. It enables users to control and automate smart home devices—including lights, thermostats, locks, and sensors—without relying on cloud services. Built in Python with an asyncio event loop, it emphasizes local processing and data sovereignty, ensuring all device data remains under the user’s control.
read the full Home Assistant overview →
About OpenCCU
OpenCCU is a free, non commercial, open source Buildroot based operating system that turns Homematic IP and HomeMatic hardware into a cloud free smart home hub, aimed at owners of eQ 3 CCU3 or ELV Charly hardware, Raspberry Pi and other single board computers, and x86 64 or aarch64 hosts who want vendor grade CCU behaviour without depending on a vendor cloud.
read the full OpenCCU overview →
More in Miscellaneous
Related comparisons
More Internet of Things (IoT) projects
Compare either of these against the rest of the Internet of Things (IoT) field.
Frequently asked questions
Is Home Assistant or OpenCCU more popular?
Home Assistant has 90,832 GitHub stars and OpenCCU has 1,833. Home Assistant has the larger community by that measure.
Are Home Assistant and OpenCCU free?
Both are open source. Home Assistant is licensed under Apache-2.0 and OpenCCU under Apache-2.0. Neither carries a licence fee.
What is the difference between Home Assistant and OpenCCU?
Home Assistant is written in Python and OpenCCU in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Home Assistant or OpenCCU?
Choose Home Assistant if you want the larger community (90,832 stars) or its Apache-2.0 licence terms. Choose OpenCCU if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.