Checkly
Checkly provides synthetic monitoring for APIs and web apps with programmable checks and alerting. · Checkly · Observability
Overview
Checkly offers programmable synthetic monitoring for APIs and web apps, allowing users to automate uptime and performance checks with alerting on failures.
Good fit
Use Checkly to monitor API endpoints or web app flows with programmable checks and receive downtime alerts.
- API monitoring
- web app uptime
- small teams
- open source projects
Not a fit
Avoid if you need more than 1 team member, SMS/phone alerts, or high-frequency checks beyond the free tier.
- large teams
- complex alerting needs
- high-frequency enterprise monitoring
Quickstart · 5 steps
- Sign up for a free Checkly account.
- Create a new project in your dashboard.
- Add an API or browser check with your target URL.
- Configure alerting options (email, webhook, etc).
- Review monitoring results and set up additional checks as needed.
Other free observability options
Free tierWhat you get freeRiskCard
Datadog · Observability
Up to 5 hosts (Free plan) · 1-day metric retention (Free plan) · 14-day free trial of Pro/Enterprise features
Billing risk: None
No card
New Relic · Observability
100 GB/month data ingest · Unlimited basic users, 1 full platform user · 500 synthetic checks/month
Billing risk: None
No card
Sentry · Observability
5,000 errors/month · 5 GB logs and metrics/month · 5M spans/month
Billing risk: None
No card
UptimeRobot · Observability
50 monitors · 5-minute check interval
Billing risk: None
No card