Monitoring
Know when it breaks: errors, uptime, logs and product analytics.
Sentry
Error monitoring and tracing. See the stack trace, the browser and the release behind every crash your users hit.
Free: Developer plan: free for one userPostHog
Product analytics, session replay, feature flags, error tracking and surveys in one tool, with a free allowance that resets every month.
Free: 1M analytics events, 5K session recordings, 1M feature-flag requests per monthUptimeRobot
Pings your site, API or port on a schedule and alerts you when it goes down. Includes a basic public status page.
Free: 50 monitors at a 5-minute intervalBetter Stack
Uptime monitoring, status pages, logs and Sentry-compatible error tracking on one platform.
Free: 10 monitors and heartbeats, 1 status pageFree tiers at a glance
| Tool | Free tier highlights | Paid from |
|---|---|---|
| Sentry | Developer plan: free for one user; Error monitoring and tracing, email alerts | Team: $26/month (billed annually) |
| PostHog | 1M analytics events, 5K session recordings, 1M feature-flag requests per month; 100K exceptions for error tracking | See pricing page |
| UptimeRobot | 50 monitors at a 5-minute interval; HTTP, keyword, ping and port monitors | See pricing page |
| Better Stack | 10 monitors and heartbeats, 1 status page; 100,000 exceptions per month, 5,000 session replays | See pricing page |