Lowdown - Lowdown unleashes the valuable content locked within Slack and emails it to your members so they don't miss key information.
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
Scrumbot - A summary of all team data in Slack before your daily scrum
UptimeRobot - Free Website Uptime Monitoring
Marketplace Hacks - A slack community of marketplace founders & operators
Simple Ops - Simplify website performance and uptime monitoring with alerting, ssl check, chrome ux metrics, multi locations