JobRunner is a tool designed to run a job (i.e., to execute a commandline or script) which does not require user interaction, and to store the program's output (standard error and standard out) in an easy-to-read log file. It is able to save a configuration file of the job to be run, which can be used by JobRunner_Caller as a lightweight queueing system. See the Primer included in the archive for extra details on usage examples.
Java Gearman Service is a Java implementation of the gearman service, which provides a generic application framework that farms work out to other machines or processes that are better suited to do the work. It allows you to do work in parallel, to load balance processing, and to call functions in other languages. It can be used in a variety of applications, from high-availability Web sites to the transport of database replication events.