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Comparison · Analytics
Fluent Bit vs Umami
A side-by-side editorial comparison of Fluent Bit and Umami — release velocity, themes, recent moves, and the top alternatives to consider.
Fluent Bit vs Umami: at a glance
What is Fluent Bit?
Fluent Bit 5.2 adds its own typed scripting language for log processing
Fluent Bit 5.2.0 shipped on 9 November. Its main addition is Fluent Typed Scripting, a processor with reusable typed policy packs, JSON field decoding and editor definitions, alongside the experimental browser runtime, output throttling and YAML config generated from CLI flags. The release also carries dozens of input hardening fixes, from OTLP decoding limits to syslog overflow and an AWS credential URI bypass. Experimental browser SDK builds from master keep appearing several times a day, each marked as unsupported for production.
What is Umami?
Umami spent late 2025 patching Next.js CVEs, then shipped Boards and Session Replay in v3.1.0.
The window splits sharply. Four of six releases are December 2025 patches across the v2 and v3 lines, all responding to the same Next.js and React security advisories plus Docker build breakage — several shipped within days of each other because the first fix updated Next.js without the affected React versions. Then v3.1.0 in April 2026 delivered custom dashboards as Boards, Session Replay, Web Vitals performance tracking, a redesigned share page, and a large batch of fixes.
Fluent Bit vs Umami: editorial side-by-side
Fluent Bit
6.3ANALYTICS
Fluent Bit 5.2 adds its own typed scripting language for log processing
◆ Current state
Fluent Bit 5.2.0 shipped on 9 November. Its main addition is Fluent Typed Scripting, a processor with reusable typed policy packs, JSON field decoding and editor definitions, alongside the experimental browser runtime, output throttling and YAML config generated from CLI flags. The release also carries dozens of input hardening fixes, from OTLP decoding limits to syslog overflow and an AWS credential URI bypass. Experimental browser SDK builds from master keep appearing several times a day, each marked as unsupported for production.
◆ Where it's heading
After a month of hardening on 5.1, the 5.2 line puts new surface on top: a typed transform language that also runs in the browser build. Fluent Bit is moving from a collector configured with Lua snippets toward an agent with its own checked policy format.
◆ Prediction
Expect 5.2.x patch releases soon fixing regressions in the new FTS processor, and more FTS policy packs; the browser SDK is likely to stay labelled experimental for now.
Umami
0.0ANALYTICS
Umami spent late 2025 patching Next.js CVEs, then shipped Boards and Session Replay in v3.1.0.
◆ Current state
The window splits sharply. Four of six releases are December 2025 patches across the v2 and v3 lines, all responding to the same Next.js and React security advisories plus Docker build breakage — several shipped within days of each other because the first fix updated Next.js without the affected React versions. Then v3.1.0 in April 2026 delivered custom dashboards as Boards, Session Replay, Web Vitals performance tracking, a redesigned share page, and a large batch of fixes.
◆ Where it's heading
The security cluster is a framework dependency showing its cost — an analytics tool inheriting its release schedule from Next.js advisories. v3.1.0 is where product work resumes, and its content is telling: Session Replay and Web Vitals move Umami past pageview counting into behaviour and performance, which is the territory occupied by heavier commercial analytics rather than the lightweight privacy-first tools it grew up alongside.
◆ Prediction
Expect the next releases to build on Boards and Session Replay rather than return to the counting core, since both are new surfaces that arrived with a single release and no follow-up yet.
Alternatives to Fluent Bit and Umami
Other Analytics products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Fluent Bit or Umami.
Dovetail
Dovetail lets admins choose which connectors members can plug into the workspace.
Dagster
Dagster drops Python 3.10 and lets agents run schedules and sensors through MCP.
OpenHouse
OpenHouse adds time-zone-aware retention and per-database table caps.
Countly
Countly 25.03.59 defaults to Node 26, supports MongoDB 9 and tightens app scoping.
Kubecost
Kubecost cuts three 3.3.2 release candidates in two days, still without notes.
See all Fluent Bit alternatives → · See all Umami alternatives →
Recent activity from Fluent Bit and Umami
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoFluent BitExperimental browser SDK build from master
- 2d agoFluent BitExperimental browser SDK build from master
- 4d agoFluent BitExperimental browser SDK build from master
- 5d agoFluent BitExperimental browser SDK build from master
- 5d agoFluent BitFluent Bit 5.2 adds typed scripting, browser runtime and throttling ⚡
- 5d agoFluent BitExperimental browser SDK build from master
- 7mo agoUmamiv3.1.0: Boards, Session Replay and Web Vitals ⚡
- 11mo agoUmamiv3.0.3: Next.js security patch
- 11mo agoUmamiv2.20.2: Next.js security patch for the v2 line
- 11mo agoUmamiv2.20.1: React version fix and Docker build repairs
- 11mo agoUmamiv2.20.0: Next.js CVE fix for the v2 line
- 11mo agoUmamiv3.0.2: Next.js RSC vulnerability patch and UI fixes
Frequently asked questions
What is the difference between Fluent Bit and Umami?
They serve adjacent needs but don't currently overlap on shipped themes. Fluent Bit is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Fluent Bit better than Umami?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Fluent Bit is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.
What are the best alternatives to Fluent Bit?
Top Fluent Bit alternatives in Analytics are ranked by recent ship velocity. Browse the "Fluent Bit alternatives" section above for the current picks, or visit /alternatives/fluent-bit for the full list with editorial commentary on each.
What are the best alternatives to Umami?
Top Umami alternatives in Analytics are ranked by recent ship velocity. Browse the "Umami alternatives" section above for the current picks, or visit /alternatives/umami for the full list with editorial commentary on each.