A multipurpose task execution tool for distributed systems
Gunnery is a multipurpose task execution tool for distributed systems with web-based interface.
A platform to programmatically author and monitor workflows
Apache Airflow (or simply Airflow) is a platform to programmatically author, schedule, and monitor workflows.
A Cron Monitoring Tool written in Python & Django
healthchecks is a watchdog for your cron jobs. It's a web server that listens for pings from your cron jobs, plus a web interface.