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Kapacitor vs Moira: catalog facts
Kapacitor	Moira
Free Free and open source under the MIT licence.	Free Free and open source; you host it yourself.
Windows, Linux, Self-hosted	Self-hosted
Processes both streaming and batch time series data Publish-subscribe alerting with flexible handlers	Realtime alerting on Graphite and Prometheus metrics Separate API, checker and notifier services
Tied closely to InfluxDB Tasks require learning the TICKscript language	Needs an existing Graphite or Prometheus metrics setup Several services to deploy and maintain
Downloadable app, Self-hosted	Self-hosted
Open source	Open source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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