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Blackbox Exporter vs Uptime Kuma: catalog facts
Blackbox Exporter	Uptime Kuma
Free Free and open source, part of the Prometheus project.	Free Free and open source under the MIT licence.
Linux, Self-hosted	Windows, macOS, Linux, Web, Self-hosted
Probes over several protocols including ICMP and gRPC Official Prometheus project with regular maintenance	Monitors HTTP, TCP, ping, DNS, Docker containers and more More than ninety notification services, including most chat apps
Needs Prometheus to collect and store results No interface of its own beyond a basic status page	Runs from one place, so it cannot tell you about regional outages NFS and other network filesystems are explicitly unsupported for its data
Downloadable app, Self-hosted	Self-hosted
Open source	Open source
License not stated	License: MIT
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.