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Telegraf vs Fluent Bit: catalog facts
Telegraf	Fluent Bit
Free Free and open source. Hosting, hardware and any external services are separate.	Free Free and open source.
Linux, Windows, macOS, Command line	Linux, Self-hosted
Provides many input and output plugins Connects data sources to monitoring back ends	Small footprint for an agent Native OpenTelemetry input and output
Requires a separate destination to store and visualize collected data.	Only a pipeline; needs a separate backend to store and view data Configuration takes some learning
Downloadable app	Downloadable app, Self-hosted
Open source	Open source
License: MIT	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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