Checkly

Monitoring · Free · since 2018

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Checkly is a aPI and browser monitoring with Playwright tests, deployed via code. It handles monitoring as code, playwright, api checks, and alerts, and it's best suited for devops teams wanting monitoring as code. It has been around since 2018, giving it a 8-year head start in building out integrations and refining the product.

The free plan is free for 5 checks — enough for most people to evaluate whether it fits. It's designed for small teams, striking a balance between simplicity and collaboration features.

pros

Includes Monitoring as Code as a core feature, purpose-built for monitoring workflows
Includes Playwright as a core feature, purpose-built for monitoring workflows
Free for 5 checks — generous enough for most small teams to get real work done
Includes api checks alongside the core feature set — fewer separate tools needed

cons

Free plan exists but key features are locked behind the paid upgrade
Developer-oriented tooling may not suit non-technical team members
Ecosystem of third-party integrations is smaller than the market leaders in monitoring
Limited team/admin features if your organization eventually scales up

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