Uptime / synthetic
UptimeRobot
UptimeRobot
The most popular free SaaS uptime monitor for indie devs and small sites.
- Category
- Uptime / synthetic
- License
- Proprietary
- Deployment
- SaaS
- Cost
- Low
- Free tier
- Yes
- Self-host effort
- —
- Maturity
- Incumbent
- Popularity
- Market leader by user count in cheap/free uptime
The catch
The famous free tier is now non-commercial-use-only and capped at 5-min intervals, so a real business or 1-minute checks push you onto paid tiers.
Monitors
NetworkSyntheticsServers
Capabilities
AlertingStatus pages
Built for
SMBDevelopers
First-hand data
data as of Jun 24, 2026
Polled first-hand from each vendor's public status page & GitHub. "Significant" excludes informational notices & planned maintenance; incident-minutes sum per-incident durations (not platform downtime). Method & full data →