head to head · open source
android vs OpenCCU
android has 3,903 GitHub stars, 1,067 forks, 458 open issues and last shipped yesterday. OpenCCU has 1,833 stars, 221 forks, 189 open issues and last shipped yesterday. android leads on adoption by 113% (3,903 vs 1,833 stars). android is written in Kotlin under Apache-2.0; OpenCCU is written in JavaScript under Apache-2.0. android has attracted 27% as many forks as stars, OpenCCU 12%. OpenCCU was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (home-automation), 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.
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Side by side
| android | OpenCCU | |
|---|---|---|
| GitHub stars | ★ 3.9K | ★ 1.8K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Kotlin | JavaScript |
| Last push | 2026-09-19 | 2026-09-19 |
| Forks | ⑂ 1.1K | ⑂ 221 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick android if
- You weight community size — 3.9K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Kotlin
- 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 android
The Home Assistant Companion for Android is the official Android application for Home Assistant, an open source home automation platform. It is written in Kotlin, released under the Apache 2.0 license, and distributed as an open source app for Android devices. The project sits inside the Home Assistant ecosystem and connects a mobile client to a user's Home Assistant instance.
read the full android 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 →
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Frequently asked questions
Is android or OpenCCU more popular?
android has 3,903 GitHub stars and OpenCCU has 1,833. android has the larger community by that measure.
Are android and OpenCCU free?
Both are open source. android is licensed under Apache-2.0 and OpenCCU under Apache-2.0. Neither carries a licence fee.
What is the difference between android and OpenCCU?
android is written in Kotlin 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, android or OpenCCU?
Choose android if you want the larger community (3,903 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.