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Logging · head to head

Fluentd vs incident.io

Fluentd logo

Fluentd

Logging

Open Source Data Collector for Unified Logging

From
Free
Rated
-
Full reviewWebsite
incident.io logo

incident.io

Logging

Software reliability platform with on-call management and agentic root cause analysis

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Fluentd fluentd needs more than 60 MB of memory at runtime, against roughly 450 KB for Fluent Bit; incident.io free plan limited to single team and basic features
  • They diverge on capability: Fluentd covers Log collection, incident.io covers Intelligent alert routing.

Where they differ

Only the attributes on which Fluentd and incident.io actually diverge.

Attributes where Fluentd and incident.io differ
AttributeFluentdincident.io
Pricing modelopen-sourcesubscription
PlatformsWeb, ApiWeb, Slack, Microsoft Teams
Founded20112021

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Logging).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Fluentd

  • Log collection
  • Data parsing
  • Filtering and buffering
  • Event routing
  • API
  • Webhooks
  • REST
  • Web support

Only in incident.io

  • Intelligent alert routing
  • Agentic root cause analysis
  • On-call scheduling
  • Slack and Teams integration
  • AI call transcription
  • Status pages
  • Workflow automation

What people use each for

The jobs each tool is most often brought in to do.

Fluentd

  • Unified log collection and routing from many sources to many destinationsnot incident.io
  • Parsing and transforming log records before forwardingnot incident.io
  • Aggregating logs from containers into Elasticsearch, S3 or a SIEMnot incident.io

incident.io

  • Manage incident response workflows in Slacknot Fluentd
  • Automatically investigate root causes with AInot Fluentd
  • Maintain on-call schedules across teamsnot Fluentd
  • Track incident metrics and trendsnot Fluentd
  • Communicate status to customers automaticallynot Fluentd

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Fluentd

  • Fluentd needs more than 60 MB of memory at runtime, against roughly 450 KB for Fluent Bit
  • Fluentd is built as a Ruby gem and depends on other gems, so a Ruby runtime is required
  • Its capability comes from over 1,000 external plugins rather than built in functionality, so each added input or output is a separate dependency
  • The Fluent Bit documentation states that cloud providers have switched from Fluentd to Fluent Bit for performance and compatibility and calls Fluent Bit the next generation solution

incident.io

  • Free plan limited to single team and basic features
  • Per-user pricing increases costs for larger teams
  • Agentic features may require additional integrations
  • Advanced features concentrated in higher price tiers

Pricing, plan by plan

Fluentd

Free
  • FreeFree
    • Log collection
    • Data parsing
    • Filtering and buffering

incident.io

Free
  • BasicFree
    • Slack and Teams support
    • Single team on-call
    • Status pages
  • Pro$25/user-month
    • All Team features
    • Advanced insights
    • Custom dashboards
  • Enterprise$undefined/custom
    • All Pro features
    • Dedicated success manager
    • Advanced access controls

Which should you pick?

Choose Fluentd if

  • You need log collection.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want data parsing.
Fluentd review

Choose incident.io if

  • You need intelligent alert routing.
  • You want to start without paying.
  • You work on Web, Slack, Microsoft Teams.
  • You also want agentic root cause analysis.
incident.io review

Questions people ask

Is Fluentd or incident.io better?
Neither clearly leads. Fluentd starts at Free and incident.io at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fluentd or incident.io?
Fluentd starts at Free and incident.io at Free.
Does Fluentd or incident.io run on more platforms?
Fluentd runs on Web, Api. incident.io runs on Web, Slack, Microsoft Teams.
Can I use Fluentd for free?
Both have a free tier, so you can try either at no cost before committing.
What is Fluentd best used for?
Fluentd is most often used for unified log collection and routing from many sources to many destinations, parsing and transforming log records before forwarding, aggregating logs from containers into elasticsearch, s3 or a siem. Of those, unified log collection and routing from many sources to many destinations and parsing and transforming log records before forwarding are not what incident.io is typically brought in for.
What can Fluentd do that incident.io cannot?
Fluentd covers Log collection, Data parsing, Filtering and buffering, Event routing. incident.io covers Intelligent alert routing, Agentic root cause analysis, On-call scheduling, Slack and Teams integration.

Answered from the vendors’ own pages

Fluentd: How much does Fluentd cost?

Fluentd is free and open-source under the Apache 2 License from the Cloud Native Computing Foundation (CNCF). There are no subscription fees, licensing costs, or commercial pricing tiers.

Source
incident.io: What is included in the free incident.io plan?

The Basic free plan includes Slack and Teams support, single team on-call, status pages, and 1 custom field, ideal for getting started with incident management.

Source
incident.io: How much does on-call management cost?

On-call is an add-on costing $10/user/month for Team plan or $20/user/month for Pro plan, in addition to base incident management pricing.

Source
incident.io: Can incident.io integrate with my existing tools?

incident.io natively integrates with Slack and Microsoft Teams for incident management workflows, with additional integrations available.

Source
incident.io: What SLA does incident.io offer?

Only the Enterprise plan includes a 99.99% SLA guarantee. Basic, Team, and Pro plans do not have published SLAs.

Source
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