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[category: monitoring][verified alternatives][no votes, no pay-to-list]

Free and open source alternatives for Monitoring

12 free or open source projects taken from the pages of 9 paid apps in this category. For each one: how many it replaces, how much subscription it cancels, what it costs to run.

free alternatives
12
$/month replaceable
163
already self-hosted
10
apps covered
9

12 alternatives

The value is the sum of the prices of the apps that project replaces — including outside this category, because a good alternative rarely serves only one.

156 $ /mese

PostHog open source ★ 37,5k active [hosted] web · self-hosted · iOS · Android

Funnels, cohorts and retention on a free million-event allowance; the kitchen sink comes along.

the 13 apps it replaces · 156 $/month

Three ways out of the subscription: 1. you keep paying (156 $/month) 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

LogRocket 69 $/m NOT REALLY Mouseflow 39 $/m NOT REALLY Crazy Egg 29 $/m NOT REALLY Lucky Orange 19 $/m NOT REALLY Amplitude — NOT REALLY FullStory — NOT REALLY GoSquared — KIND OF Heap — NOT REALLY June — KIND OF Mixpanel — NOT REALLY Smartlook — NOT REALLY Usermaven — KIND OF Woopra — NOT REALLY

source code · verificata il 2026-08-06

109 $ /mese

HyperDX open source ★ 9,8k active [docker] web · self-hosted

Logs, traces, errors and session replay joined at the hip.

the 6 apps it replaces · 109 $/month

Three ways out of the subscription: 1. you keep paying (109 $/month) 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

LogRocket 69 $/m NOT REALLY Axiom 25 $/m KIND OF Datadog 15 $/m NOT REALLY Grafana Cloud — NOT REALLY Honeycomb — NOT REALLY New Relic — NOT REALLY

source code · verificata il 2026-08-06

99 $ /mese

OneUptime open source ★ 7,4k active [ops] web · self-hosted

Monitoring, incidents and status pages in one stack; simplicity did not survive.

the 5 apps it replaces · 99 $/month

Three ways out of the subscription: 1. you keep paying (99 $/month) 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

Checkly 39 $/m KIND OF Better Stack / UptimeRobot paid 30 $/m YES Datadog 15 $/m NOT REALLY Pingdom 15 $/m NOT REALLY New Relic — NOT REALLY

source code · verificata il 2026-08-06

55 $ /mese

Uptime Kuma open source ★ 87,3k active [docker] web · self-hosted

Push monitors and ordinary uptime checks under one very cheerful roof.

the 3 apps it replaces · 55 $/month

Three ways out of the subscription: 1. you keep paying (55 $/month) 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

Better Stack / UptimeRobot paid 30 $/m YES Pingdom 15 $/m NOT REALLY Cronitor 10 $/m YES

source code · verificata il 2026-08-06

45 $ /mese

Gatus open source ★ 11,8k active [docker] web · self-hosted

A YAML file, a status board and enough protocol checks to annoy most outages.

the 2 apps it replaces · 45 $/month

Three ways out of the subscription: 1. you keep paying (45 $/month) 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

Better Stack / UptimeRobot paid 30 $/m YES Pingdom 15 $/m NOT REALLY

source code · verificata il 2026-08-06

40 $ /mese

OpenObserve open source ★ 20,6k active [docker] web · self-hosted

A single-binary observability stack that remembers storage is not free.

the 5 apps it replaces · 40 $/month

Three ways out of the subscription: 1. you keep paying (40 $/month) 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

Axiom 25 $/m KIND OF Datadog 15 $/m NOT REALLY Grafana Cloud — NOT REALLY Honeycomb — NOT REALLY New Relic — NOT REALLY

source code · verificata il 2026-08-06

25 $ /mese

VictoriaLogs open source ★ 2,1k active [docker] web · self-hosted

A fast log store and query UI; metrics and traces are somebody else's problem.

the 1 app it replaces · 25 $/month

Three ways out of the subscription: 1. you keep paying (25 $/month) 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

Axiom 25 $/m KIND OF

source code · verificata il 2026-08-06

15 $ /mese

Coroot open source ★ 7,9k active [ops] web · self-hosted

eBPF observability with opinions; best when your apps live in containers.

the 2 apps it replaces · 15 $/month

Three ways out of the subscription: 1. you keep paying (15 $/month) 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

Datadog 15 $/m NOT REALLY New Relic — NOT REALLY

source code · verificata il 2026-08-06

— price not verified

Uptrace open source ★ 4,3k active [ops] web · self-hosted

OpenTelemetry APM with two databases and no pretending that is one click.

the 2 apps it replaces

Three ways out of the subscription: 1. you keep paying 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

Grafana Cloud — NOT REALLY Honeycomb — NOT REALLY

source code · verificata il 2026-08-06

— price not verified

Bugsink free [hosted] web · self-hosted

Fifteen thousand hosted errors a month for one user; free self-hosting exists, but it is not open source.

the 1 app it replaces

Three ways out of the subscription: 1. you keep paying 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

Sentry — KIND OF

verificata il 2026-08-06

— price not verified

Exceptionless open source ★ 2,5k active [ops] web · self-hosted

A mature error tracker with a strong .NET accent and a real server to maintain.

the 1 app it replaces

Three ways out of the subscription: 1. you keep paying 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

Sentry — KIND OF

source code · verificata il 2026-08-06

— price not verified

GlitchTip open source ★ 356 active [ops] web · self-hosted

Sentry's SDK protocol with fewer moving parts and fewer debugging toys.

the 1 app it replaces

Three ways out of the subscription: 1. you keep paying 2. you install this one, free 3. you vibecode it — the prompt is on each of the pages below

Sentry — KIND OF

source code · verificata il 2026-08-06

Checked by hand: no votes, no buyable positions. Prices in dollars.

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