The ultimate uptime monitoring service. Get 50 monitors with 5-minute checks completely free. Set up in seconds and stay informed about your website’s health at all times.
Website monitoring: Get instant alerts when your website goes down. Reliable and accurate monitoring helps you fix issues before they affect users and prevent revenue loss.
SSL certificate monitoring: Avoid losing visitors due to expired SSL certificates. Get notified 30 days before expiration so you can renew in time.
Ping and port monitoring: Check if your server is online or if your email service is running on port 465. Monitor any port you need with real-time alerts.
Cron job monitoring: Track scheduled tasks with heartbeat monitoring. We verify if the request arrives on time, making sure server-side jobs and internet-connected devices are running properly.
Status pages: Create up to 100 branded status pages, protect them with a password, and allow subscribers to receive updates.
Stay informed with email, SMS, voice calls, push notifications, or integrations with Slack, Zapier, PagerDuty, Telegram, Discord, Microsoft Teams, Google Chat, and more.
Maintenance windows: Pause monitoring when you schedule downtime to avoid unnecessary alerts
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Uptime.com website monitoring solutions provide unmatched visibility and availability, empowering engineering, operations and SRE teams to monitor & respond to their most essential services. Simple & intuitive industry leading Enterprise-grade features delivered at a fair price, that are continuously improving.
G2, Sourceforge and TechRadar Pro have recognized us as one of the world’s best uptime monitors for several consecutive years, including this one. Try 100% free.
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WatchCron
WatchCron is a service dedicated to monitoring cron jobs, aimed at assisting DevOps teams and developers in maintaining the punctual execution of their scheduled tasks. By creating monitoring endpoints and linking them to cron jobs through a straightforward HTTP ping, users receive immediate notifications via email, Slack, or webhook whenever a job fails, is delayed, or does not run at all. Additionally, WatchCron offers flexibility with custom schedules, grace periods, and supports team collaboration while providing a comprehensive execution history. This service is ideal for teams that prioritize reliability and require assurance that their background tasks, backups, and automated scripts operate seamlessly and as intended. To enhance operational efficiency, WatchCron also allows for easy integration with existing workflows.
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RunVouch
Unlike most monitors that simply notify you of a job's ping, RunVouch goes a step further by confirming whether the task was actually completed. It meticulously tracks vital information such as the start and end times, costs, token usage, tool calls, and ensures that the necessary evidence of a run's completion is present, alerting users if anything is amiss. This system can identify various issues, including a run that never started, stalled executions, non-zero exits, infinite retry loops, runs exceeding their cost limits, and even those elusive tasks that appear to have succeeded while their outputs were never generated.
Each completed run is hashed into a leaf, with daily leaves combined into a Merkle root that connects to the previous day and is timestamped on the Bitcoin blockchain using OpenTimestamps, ensuring that reports are immutable and cannot be altered by anyone, including the developers themselves. This allows anyone to verify a sealed run through their browser without needing an account, and they can even modify a field to see the hashes become invalid.
The client is a standalone Python file that operates without any dependencies, wrapping any command and designed to fail open, thereby ensuring that job monitoring remains intact. It supports various platforms such as Claude Code, OpenClaw, n8n, GitHub Actions, cron, systemd, Slack, and MCP. With a generous offer of free usage for up to 20 agents, it is available under the MIT license and can be self-hosted, making it a flexible solution for diverse monitoring needs. Additionally, its ability to integrate seamlessly with existing tools enhances its practicality for users looking for reliable job execution verification.
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