Spirited Away checks each running application's activity, and if an application isn't active for a certain fixed time, Spirited Away hides the application automatically. It is, in effect, Spirited Away :-)
NICKSLOAN This is a very neat little app, but I wish the status item could be greyed when SA is deactivated. I would suggest this direct to the developer, but I can find no way to contact them. (Version 0.7.2)
MACOLYTE I've been running Spirited Away for a year or two, and I don't know what computing would be without it. It does what it does, invisibly, with access right there on your menu bar. Brilliant software. (Version 0.7.2)
NMEGE in v.0.7 under Leopard (10.5.7): the app doesn't show up in the dock nor task bar BUT in the menu bar. It took me some time to notice its icon up there (i have a big screen) and i would suggest the owner to include an introductory message at first launch, with an "open preferences" option. (Version 0.7)
DPACANIA 0.7 didn't work in leopard - but 0.5 is working just fine! very helpful app for those who need help with concentration but need to multi task as needed. (Version 0.7)
MACUPDATE ADMIN All you have to do is click on the 'More Information' link on the MacUpdate page for Spirited Away which will take you to the developer's site and you can find the previous versions there. (Version 0.7)
APIKOROS I used v.5 on my Intel Core Duo iMac running OS 10.4.9, and it functioned very well. I'm afraid v.7 is non-functional, so I'm reverting. (Version 0.7)