GuardLabs

← All website monitoring tools

Sematext Synthetics logo

Sematext Synthetics

paid From $9/mo · Founded 2010 · cloud

Synthetic monitor with Selenium-based browser checks + transaction monitoring.

Free tier: 14-day trial

What it does well

  • Simulates multi-step user journeys (transactions) using Selenium-based browser scripts.
  • Monitors Core Web Vitals and other front-end performance metrics from real browsers.
  • Integrates natively with Sematext Logs and Monitoring for a unified observability view.

Where it falls short

  • Pricing is per-monitor and per-run, which can become costly at scale.
  • The 14-day trial is short for evaluating complex transaction monitoring setups.
  • Status pages offer limited customization options compared to dedicated status page tools.
Visit Sematext Synthetics See all 50 tools
Tags: uptimesyntheticbrowser-testssmall-team

Alternatives to Sematext Synthetics

Datadog Synthetics

Enterprise synthetic monitoring — part of Datadog's observability platform, billed per check.

Checkly

Checkly

freemium

Synthetic monitoring with Playwright browser tests — developer-first, code-as-config.

GuardLabs Care

Annual website care + monitoring + monthly health report — for solo founders and small teams who don't want monthly billing complexity.

UptimeRobot

UptimeRobot

freemium

Most popular free uptime monitor — 50 free monitors at 5-min intervals.