Gladys Assistant vs OpenHAB: Which to Self-Host?
Quick Verdict
OpenHAB is the better choice if you have a large number of diverse smart home devices and want maximum protocol support. Gladys Assistant is better if you want a clean, modern UI with simpler setup and don’t need to integrate obscure industrial protocols. For most home users, Gladys gets you running faster; for power users with complex setups, OpenHAB offers more depth.
Overview
Gladys Assistant is a privacy-first home automation platform built with Node.js. It focuses on simplicity and a polished user experience. Created by a solo developer (Pierre-Gilles Leymarie) in 2013, it’s grown into a mature project with Zigbee, Z-Wave, MQTT, and Bluetooth support. It runs well on a Raspberry Pi and has a clean dashboard.
OpenHAB (Open Home Automation Bus) is a Java-based home automation platform that’s been around since 2010. It supports over 400 add-ons covering virtually every smart home protocol and cloud service. It’s backed by the openHAB Foundation and has a large community. The trade-off is complexity — OpenHAB has a steeper learning curve.
Feature Comparison
| Feature | Gladys Assistant | OpenHAB |
|---|---|---|
| Protocol support | Zigbee, Z-Wave, MQTT, BLE, Philips Hue, Sonos | 400+ add-ons (Zigbee, Z-Wave, MQTT, KNX, Modbus, EnOcean, and many more) |
| UI | Modern web dashboard | MainUI (web), BasicUI, HABPanel, mobile apps |
| Rule engine | Simple scenes + triggers | Powerful rules (DSL, JavaScript, Blockly, JRuby) |
| Mobile app | PWA | Native iOS and Android |
| Voice assistants | Limited | Google Home, Alexa, Apple HomeKit (via add-on) |
| Docker setup | Single container | Single container |
| RAM usage | ~200-400 MB | ~500 MB - 1 GB+ |
| Language | Node.js | Java (OSGi) |
| Community size | Smaller (French-origin, growing international) | Large (global, 10+ years) |
| Documentation | Good, focused | Extensive but can be overwhelming |
| REST API | Yes | Yes (comprehensive) |
| Persistence/history | SQLite | InfluxDB, rrd4j, JDBC, many options |
Installation Complexity
Gladys Assistant is a single Docker container with SQLite embedded. Pull the image, map a volume for data, and you’re running. Zigbee and Z-Wave dongles need USB device passthrough. The initial setup wizard walks you through creating an account and configuring integrations. Total time to first dashboard: about 10 minutes.
OpenHAB is also a single Docker container, but configuration takes longer. After starting the container, you install add-ons (bindings) for your devices through the UI or configuration files. The Items/Things model takes time to understand — you define Things (physical devices), link them to Items (abstract representations), and then build rules. Expect 30-60 minutes to get your first device automated.
Performance and Resource Usage
| Resource | Gladys Assistant | OpenHAB |
|---|---|---|
| RAM (idle) | ~200 MB | ~500 MB |
| RAM (active) | ~300-400 MB | ~700 MB - 1.2 GB |
| CPU | Low | Moderate (Java) |
| Startup time | ~10 seconds | ~30-60 seconds |
| Raspberry Pi 4 | Runs well | Runs, but slower startup |
| Disk | ~500 MB | ~1 GB+ with add-ons |
Gladys is significantly lighter. OpenHAB’s Java runtime and add-on framework consume more resources, especially during startup and when many bindings are loaded.
Community and Support
Gladys has a smaller but engaged community, primarily on the Gladys forum and Discord. Documentation is available in English and French. The project is primarily maintained by one developer with contributors.
OpenHAB has a large, active community with a busy forum, extensive documentation, and years of accumulated knowledge. Finding help for obscure device integrations is much easier with OpenHAB. The project is backed by a foundation and has a regular release cadence.
Use Cases
Choose Gladys Assistant If…
- You want a clean, modern interface out of the box
- Your smart home uses mainstream protocols (Zigbee, Z-Wave, MQTT, WiFi)
- You’re running on a Raspberry Pi and want low resource usage
- Simple automation scenes are sufficient for your needs
- You prefer quick setup over deep customization
Choose OpenHAB If…
- You have devices using niche protocols (KNX, Modbus, EnOcean, DMX)
- You need a powerful, flexible rule engine
- Integration with voice assistants (Alexa, Google Home, HomeKit) matters
- You want native mobile apps
- You’re comfortable with a steeper learning curve for more control
- Long-term community support and ecosystem size are important
Final Verdict
OpenHAB is the more capable platform with broader device support and a more powerful automation engine. If you’re building a complex smart home with many different device types, OpenHAB handles it better.
Gladys Assistant is the friendlier option for most home users. If your devices are mainstream Zigbee/Z-Wave/MQTT, Gladys provides a better out-of-the-box experience with less configuration overhead. It’s also noticeably lighter on resources.
Neither beats Home Assistant for most users — but between these two, pick OpenHAB for breadth and Gladys for simplicity.
Related
Get self-hosting tips in your inbox
Get the Docker Compose configs, hardware picks, and setup shortcuts we don't put in articles. Weekly. No spam.
Comments