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Fluent Bit
Fast and Lightweight Log Processor
As of 30 August 2026, Fluent Bit is free to use. Fluent Bit is a lightweight and fast log processor and forwarder built in C. Softwr lists it under Logging. Fluent Bit is made by Cloud Native Computing Foundation, launched in 2015, available on Web, API.
Overview
What Fluent Bit does
Fluent Bit is a lightweight and fast log processor and forwarder built in C.
What people use it for
- Lightweight log and metric forwarding from containers and edge devices
- Kubernetes node level log collection with a small memory footprint
- Filtering and enriching telemetry before shipping it to a backend
The honest half
Where it falls short
Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Fluent Bit.
- Fluent Bit ships over 100 built in plugins against more than 1,000 external plugins available for Fluentd, so fewer integrations exist out of the box
- It is written in C, so extending it beyond the built in plugins means writing C rather than Ruby
- Dependencies are zero only until a plugin requires one
Cross-shopped
What people choose instead of Fluent Bit
Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.
- Fluent BitvsDatadog Logs
Datadog Logs: Log Management and Analytics
- Fluent BitvsNew Relic
New Relic: Observability made simple
- Fluent BitvsCoralogix
Coralogix: Continuous Log Insights and Visibility
Pricing
What Fluent Bit costs
Taken from the vendor's own pricing page. Prices move, so check before you buy.
Free
Free
- Log collection
- Lightweight processing
- Data parsing
Capabilities
Features
Log collection
Lightweight processing
Data parsing
Event filtering
API
Integration with API
Webhooks
Integration with Webhooks
REST
Integration with REST
Web support
Available on web
Api support
Available on api
Answered, with sources
Questions people ask
Each answer names the page it came from, so you can check it rather than take our word for it.
Is Fluent Bit free?
Yes, Fluent Bit is a CNCF graduated open-source project with no vendor lock-in and is freely available for download and use.
SourceDoes Fluent Bit offer an Enterprise option?
The website navigation mentions an Enterprise section suggesting paid offerings exist, but specific pricing and details are not provided on the publicly available pages.
SourceBehind it
Who makes Fluent Bit
- Company
- Cloud Native Computing Foundation
- Based in
- United States
Keep looking
Where to go from Fluent Bit
- Fluent Bit alternativesEvery product people weigh against it
- Fluent Bit pricingPlans, floors and what the tiers exclude
- Fluent Bit badgesWhich rules it meets, and the figure behind each
- All Logging softwareThe full category
- Best Logging softwareThe shortlist, and how it was cut
Best Logging software for
Compare Fluent Bit with
- New Relic
- Elastic Stack
- Datadog Logs
- Coralogix
- Vector
- InfluxDB
- Checkly
- CloudWatch
- Logz.io
- Grafana Loki
- Azure Monitor
- Better Stack
- Bugsnag
- Dynatrace Logs
- Elastic APM
- Filebeat
- Elastic
- Elastic APM
Other Logging software
Continuous Log Insights and Visibility
Free, then $0.42/GB (logs ingestion)10 researched notesA Lightweight and Ultra-Fast Tool for Building Observability Pipelines
Free plan9 researched notesPurpose-built time series database for metrics and events
Free, then $0.0025/MB ingested12 researched notesActive reliability platform combining uptime monitoring, API testing, and incident response
Free plan11 researched notesAI-native observability and incident response platform.
Free, then $25/mo12 researched notes
Softwr does not host reviews and shows no star rating for Fluent Bit, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.
More on Fluent Bit
Fluent Bit alternatives
What people switch to, and what they give up
Fluent Bit pricing
Every tier, and where the cost actually lands
Compare Fluent Bit
Put it head to head with anything we hold
Fluent Bit badge
Its rating, and an embed for your own site
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