Quartz.NET is a port of the popular open source Java job scheduling framework Quartz. It allows scheduling of jobs to run tens, hundreds, or thousands of jobs on a defined schedule. The Quartz scheduler includes enterprise features like JTA transactions and clustering. To use Quartz.NET, add the Quartz and Common Logging DLL files to a project and create a job class with a schedule defined in Global.asax.cs to execute the job and write logs to a file every 5 seconds.