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Fluentd vs Grafana Alloy: catalog facts
Fluentd	Grafana Alloy
Free Free and open source; commercial support is sold separately by other companies.	Free Free and open source from Grafana Labs.
Self-hosted	Self-hosted
More than 500 plugins for inputs and outputs Decouples log sources from storage backends	One collector for logs and other telemetry Replacement for the retired Promtail
Aimed at server infrastructure rather than a single desktop Needs configuration and plugins chosen for each setup	Only a collector; needs Loki, Grafana or another backend to be useful Configuration takes time to learn
Self-hosted	Self-hosted
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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