"Quartz.NET is a full-featured, open source job scheduling system that can be used from smallest apps to large scale enterprise systems. Quartz.NET is a port of very propular open source Java job scheduling framework, Quartz. This project owes very much to original Java project, it’s father James House and the project contributors. Quartz.NET is a pure .NET library written in C# which currently targets Framework version 1.1 and above. Quartz.NET has already almost caught up with Quartz Java 1.6 and there aren’t so many things missing. Quartz.NET is running in some production systems and has received good feedback."

Quartz.NET - Enterprise Job Scheduler for .NET Platform