1)   nnCron LITE 1.16
Small, freeware, full-featured scheduler, that can launch applications and open documents at specified time or with specified frequency. Can be started as a system service or as a regular standalone application. This is a UNIX Cron ported to Windows.

 2)   xStarter 1.9.0
xStarter will help you to automate each and every process in your computer. Automate operations on schedule, or on a keypress or via various events (windows event log changes, file/folder modifications, signals from an RS232 port, TCP/IP, etc.)

 3)   xStarter Web Pilot 1.84
A special edition of an advanced task scheduler that allows you to prepare system maintenance tasks locally and deploy them to all computers in your organization. Control remote tasks with a built-in web browser interface.

 4)   VisualCron 5.7.5
An advanced task scheduler / automation tool for Windows. Client/Server architecture. Remote, secure control across the Internet. Start processes, copy files, remote scripts. Triggers that starts jobs can either be based on time or system events.