Troops Slack Sales Gong - The most customizable Salesforce Gong in Slack
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
UptimeRobot App - Web, SSL, ports & Cron-jobs monitoring
UXPin + Slack - Keep tabs on design projects in Slack
Cronitor - Monitor cron jobs, micro-services, daemons and almost anything else, no setup required. Easier cron troubleshooting and no more silent failures.
Get Notified - Get Notified when something happens