Best Big Sister Alternatives in 2026
Updated
20 platforms from network monitoring ranked against Big Sister on the same published basis.
- 1Big Sister vs Centreon
- 2Big Sister vs Obkio
- 3Big Sister vs ManageEngine OpManager
- 4Big Sister vs NetXMS
- 5Big Sister vs ntopng
- 6Big Sister vs Observium
- 7Big Sister vs OpenNMS
- 8Big Sister vs Paessler PRTG Network Monitor
- 9Big Sister vs WhatsUp Gold
- 10Big Sister vs Checkmk
- 11Big Sister vs Fing Security
- 12Big Sister vs LibreNMS
- 13Big Sister vs WhatsUp Gold
- 14Big Sister vs Catchpoint Internet Performance Monitoring
- 15Big Sister vs Domotz
- 16Big Sister vs FastNetMon
- 17Big Sister vs Intermapper
- 18Big Sister vs Site24x7 Network Monitoring
- 19Big Sister vs Zabbix
- 20Big Sister vs Kentik Network Monitoring System
Big Sister alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Centreon | 7.4 | Free plan | €0.19/mo | API, Linux, self-hosted, Web, Windows |
| 2 | Obkio | 7.4 | Free plan | Free | Android, API, iOS, Linux, Mac, Web, Windows |
| 3 | ManageEngine OpManager | 7.3 | Free plan | $7.92/mo | Android, API, iOS, Linux, self-hosted, Web, Windows |
| 4 | NetXMS | 7.3 | Free plan | Free | Android, API, Linux, Mac, self-hosted, Web, Windows |
| 5 | ntopng | 7.3 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 6 | Observium | 7.3 | Free plan | Free | API, Linux, self-hosted, Web |
| 7 | OpenNMS | 7.3 | Free plan | $500/mo | API, Linux, self-hosted, Web |
| 8 | Paessler PRTG Network Monitor | 7.3 | Free plan | $16.67/mo | Android, API, iOS, Linux, Mac, self-hosted, Web, Windows |
| 9 | WhatsUp Gold | 7.3 | $72.17/mo | API, self-hosted, Web, Windows | |
| 10 | Checkmk | 7.2 | Free plan | $275/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 11 | Fing Security | 7.2 | Free plan | $5.83/mo | Android, API, iOS, Linux, Mac, self-hosted, Web, Windows |
| 12 | LibreNMS | 7.2 | Free plan | Free | Android, API, iOS, Linux, self-hosted, Web |
| 13 | WhatsUp Gold | 7.2 | Free plan | Free | API, self-hosted, Web, Windows |
| 14 | Catchpoint Internet Performance Monitoring | 6.9 | Android, API, Browser, iOS, Mac, Web, Windows | ||
| 15 | Domotz | 6.9 | $1.50/mo | Android, API, iOS, Linux, Mac, Web, Windows | |
| 16 | FastNetMon | 6.9 | $60/mo | API, Linux, Mac, self-hosted, Web | |
| 17 | Intermapper | 6.8 | API, Linux, Mac, self-hosted, Web, Windows | ||
| 18 | Site24x7 Network Monitoring | 6.8 | $42/mo | Android, API, iOS, Linux, Mac, Web, Windows | |
| 19 | Zabbix | 6.8 | API, Linux, Mac, self-hosted, Web, Windows | ||
| 20 | Kentik Network Monitoring System | 6.7 | No | $166.67/mo | API, Web |
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Questions about Big Sister alternatives
What is the best alternative to Big Sister?
Centreon, number 1 in network monitoring with a score of 7.4 out of 10. The others here: Obkio, ManageEngine OpManager, NetXMS and 16 more.
What is the best free alternative to Big Sister?
Centreon is the best-ranked alternative with a free plan. 12 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.