Side by side
GSam Battery Monitor vs OpenNMS
Both stand on hardware monitoring software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Android
GSam Battery Monitor provides detailed Android battery breakdowns, estimates, charts, widgets, and alerts. Its free plan is ad-supported, and deeper statistics can require ADB while Android limitations may leave some information incomplete.
Visit GSam Battery Monitor Free plan APILinuxSelf-hosted+1
OpenNMS covers network monitoring across local and remote environments, with Horizon and Meridian serving different release and subscription needs. Consider Horizon’s production-readiness caveat and Meridian’s per-instance subscription limits when selecting a distribution.
Visit OpenNMSThe facts
| GSam Battery Monitor | OpenNMS | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Android | API, Linux, Self-hosted, Web |
| Lowest paid plan | Free or on request | Basic: $6,000 a year |
| Plans published | 2 | 6 |
| Maker | GSam Battery Monitor | Not published |
| Website | gsamlabs.com | opennms.com |
| On hardware monitoring software | #32 of 59 | #28 of 59 |
GSam Battery Monitor: what it does well
- Sorts apps by power, CPU, sensors, and wakelocks
- Estimates remaining battery time
- Charts multiple battery and device measures
- Offers widgets and customizable alarms
- Free plan costs nothing
What to know first
- Free version contains ads
- Enhanced Stats requires manual ADB setup
- Some statistics may be unavailable
- Google Play lists data as not encrypted or deletable
OpenNMS: what it does well
- Horizon community distribution is free
- Monitors remote devices through Minions
- Supports multiple traffic-flow formats
- Grafana plugin displays alarms, outages, and KPIs
What to know first
- Horizon features may not be production-ready
- 24/7 emergency support costs extra
- Support plans exclude several third-party products
- Meridian subscriptions are limited per instance
Alternatives to GSam Battery Monitor Alternatives to OpenNMS The whole list