LightStep - We deliver insights that put organizations back in control of their complex software apps.
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
Rootly - Rootly helps build a consistent incident response process by automating manual admin work like creating incident channels, Jira tickets, Zoom rooms, and generating postmortem timelines, all from within Slack.
UptimeRobot - Free Website Uptime Monitoring
WebGazer - Monitor your website's availability with WebGazer, review its performance and get instant notifications when your website goes down. No installation required and free plan available.
Simple Ops - Simplify website performance and uptime monitoring with alerting, ssl check, chrome ux metrics, multi locations