Message Queuing

    OpenQueue       http://openqueue.sourceforge.net/
    OSMQ            http://www.osmq.org/
    Joram           http://joram.objectweb.org/


Batch Jobs
    
    TORQUE          http://www.clusterresources.com/products/torque/




Idea-generators
    
    http://ask.slashdot.org/comments.pl?sid=138996&cid=11645022
    http://ask.slashdot.org/article.pl?sid=05/02/10/154200&tid=185
    http://ask.slashdot.org/article.pl?sid=05/05/13/0225245&tid=130
    http://slashdot.org/article.pl?sid=02/11/26/0213220
    http://slashdot.org/comments.pl?sid=46100&cid=4765678



Features of message queuing systems:
    - when a message can't be received right away, it's set-aside in a queue
    - guarantees that a message is only delivered once
    - guarantees that a message isn't lost
    - if a message can't be delivered within a certain amount of time, the 
        message is returned to the sender (eg. just like with SMTP mail)