Bidwell (named for Shelford Bidwell, the inventor of the first true fax machine way back in the late 1800s) is a set of Perl scripts that are designed to run as a cron job on a Unix-like system to download emails from a POP3 account and send their contents to a CUPS or lpr printer.
TimeMachine Scheduler is a Java scheduler which can scale and run a high volume of jobs with many different types of schedules, such as repeating on a fixed interval or based on cron expressions. The scheduler can control the job executions with thread pools, and it can persist job data into different storage receptacles. Users may use the built-in schedule server with an easy-to-use configuration file, or developers may use it as a library to extend the scheduler and write custom jobs, schedules, or user services.
runcronjobs processes the execution of centralized cron jobs for a pool of servers. The cron jobs are any executable files. runcronjobs runs cron jobs located in a given directory if the current host is specified as a target host for the jobs in question. It allows you to centralize all the cron jobs of a set of servers in a common shared directory.