SQL Server Schedule and Notification management system

"... sqlSentry is the only comprehensive schedule and notification management system designed and built specifically to help the busy SQL Server DBA better manage today's complex SQL Server environment. sqlSentry provides visual scheduling, schedule performance monitoring, robust MAPI-less alerting, job queuing & chaining, block detection, and many more powerful features. sqlSentry empowers DBA's with an extensive arsenal of capabilities never before available for the SQL Server platform."

Check out http://www.sqlsentry.net