UptimeRobot
UptimeRobot is a website monitoring service with a forever free plan that lets you register with just an email and monitor up to 50 websites, servers, or keywords with 5-minute intervals. Setup takes only a few clicks.
For faster checks and advanced features, paid plans offer 1-minute or 30-second intervals, along with SSL certificate, domain expiry, and heartbeat (cron job) monitoring. You can also create up to 100 status pages, customize them to match your brand, protect them with a password, and allow subscribers to receive updates.
Get notified instantly via email, SMS, voice calls, or integrations with Slack, Zapier, PagerDuty, Splunk On-Call, Telegram, Webhooks, Discord, Mattermost, Pushbullet, Microsoft Teams, Google Chat, Pushover, and more. Mobile push notifications are available through the iOS and Android apps.
Other features include maintenance windows, incident tracking with root cause analysis, tags, comments, and filters. Share account with other team members.
Learn more
Uptime.com
Uptime.com provides comprehensive, unified visibility into the availability and performance of critical services. Monitoring tools empower engineering, operations and SRE teams to maintain oversight of their web stack and respond to outages through customizable alerting channels.
Uptime.com offers a broad set of monitoring capabilities, including web, network, and email. API and transaction checks offer synthetic monitoring to perform multi-step validations of critical flows and services. Monitor public and private resources through a unified interface that streamlines configuration and alerting.
Set up and customize Status Pages with your company branding to communicate incidents and maintenance to both customers and internal teams. Provide a single-page overview that shows your overall service health at a glance.
Robust and customizable SLA reporting allows stakeholders to stay informed on incidents and downtime.
Learn more
OpsDash
OpsDash is fast to set up and easy to use. Get started in minutes with our zero-dependency agent and dashboards pre-configured to include key metrics for server, service and database monitoring. Zero-dependency, single-binary agent-based monitoring of Linux servers. Powered by Golang. Monitor your app metrics without setting up a separate system! Use StatsD and Graphite interfaces to push metrics into OpsDash. Set critical and warning alert thresholds. Notify your team via e-mail, HipChat, Slack, PagerDuty, OpsGenie, VictorOps and Webhooks. Monitor your servers, services, databases, and application metrics with OpsDash. No need to set up multiple systems. See the dashboards and metrics graphs that are important to you all in one place. Get going fast with our expertly designed, pre-configured dashboards. No need to sift through never-ending metrics lists, we’ve done the work for you.
Learn more