Job Scheduling

Quartz is a job scheduling library that can be embedded in java applications with support for transactions, persistence, clustering and plugins.

cron4j is a scheduler for the Java platform which is very similar to the UNIX cron daemon.

Sakai Job Scheduler API (scheduler Api)

Job Scheduling and Task Automation.

Java cron-like task scheduling library.

taskun scheduler library

A simple to use, cron-inspiried task scheduler

A simple long-term scheduling library inspired by cron and future

Simple Cron Service

cuttle