Best Checkly Alternatives (2026)

Checkly is a free monitoring tool (uptime monitoring). Synthetic monitoring and testing for APIs and browser transactions as code. We found 12 alternatives worth considering.

Quick verdict

Most similar: Sentry
Best free option: Sentry

Why look for Checkly alternatives?

Feature gaps — while Checkly is free, paid alternatives may offer more polish or support.
Workflow fit — every team is different; the best tool depends on your stack and preferences.

Top 12 Alternatives to Checkly

Error and performance monitoring with stack traces source maps and release tracking

Both in MonitoringShared: monitoring

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Frontend monitoring with session replay error tracking and AI-powered UX analysis

Both in MonitoringShared: monitoring

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BetterStackfree

Uptime monitoring incident management and log aggregation in one platform

Both in MonitoringShared: monitoring

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Serverless log management and observability with unlimited data retention

Both in MonitoringShared: monitoring

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Highlight.iofree

Open-source full-stack monitoring with session replay error tracking and logging

Both in MonitoringShared: monitoring

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ValidatorAIfree

AI startup idea validator used by 200K+ people

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AI market analysis in ~120 seconds for entrepreneurs

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Drop-in authentication with pre-built UI components optimized for React and Next.js

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Supabase Authfree

PostgreSQL-native auth with row-level security and social/email/phone login

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Firebase Authfree

Google auth service with email phone social and anonymous sign-in methods

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All-in-one auth with built-in orgs RBAC feature flags and billing hooks for SaaS

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Enterprise-grade auth with SSO SCIM MFA and AuthKit UI components

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Alternatives by type

Error Tracking alternatives

Session Replay alternatives

Observability alternatives

Logging alternatives

Web-Based alternatives

Auth Provider alternatives

Frequently asked questions

What are the best alternatives to Checkly?: The top alternatives to Checkly include Sentry, LogRocket, BetterStack. All are monitoring tools that support uptime monitoring workflows.
Is there a free alternative to Checkly?: Yes. Sentry is available for free. Error and performance monitoring with stack traces source maps and release tracking
Is Sentry better than Checkly?: Sentry and Checkly serve similar purposes as monitoring tools. Sentry: Error and performance monitoring with stack traces source maps and release tracking Checkly: Synthetic monitoring and testing for APIs and browser transactions as code The best choice depends on your workflow and requirements.
How many alternatives to Checkly are there?: We track 12 alternatives to Checkly across categories including Monitoring, Idea Validation, Auth.

Related alternatives pages

Alternatives to Sentry Alternatives to LogRocket Alternatives to BetterStack Alternatives to Axiom Alternatives to Highlight.io

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