Trello Calendar Connector by Cronofy - See and Organize your Trello deadlines inside your calendar
OpsDash - All-in-one solution for monitoring servers, services, uptime and databases. Curated Dashboards. Rule-based alerting.
Dead Man's Snitch - Monitor Cron Jobs and Windows Scheduled Tasks with ease.
NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.
Cronitor - Monitor cron jobs, micro-services, daemons and almost anything else, no setup required. Easier cron troubleshooting and no more silent failures.
Monitornator - Server monitoring made simple