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I need a software like Caffeine to simulate keypress periodically. Unfortunately with Caffeine I can't configure which key to press and not happy with its default.

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Moving the mouse a bit is probably safer than pressing keys. I recall some programs that would “jitter” the mouse a bit to prevent the screensaver, and they were generally pretty configurable, but I can’t find them at the moment. I’ll check my system to see if I can find one. – Synetech Jun 30 '11 at 1:38
    
Would the alternative (more straight-forward) approach of "a software that can temporarily disable the screensaver" also work for you? – Thilo Jun 30 '11 at 1:39
    
Yes, that could (probably) also work, in which case, something like BlockAPM would be an option. – Synetech Jun 30 '11 at 1:40
    
Sorry guys, disabling screensaver is not an option due to some circumstancies. – Pablo Jun 30 '11 at 1:44
    
@Synetech inc.: pressing scroll lock is much safer. Moving mouse is not so good if you are working along with that anti-idle software and actively using mouse. Then every time I have to enable/disable software not to disrupt myself. – Pablo Jun 30 '11 at 1:59
up vote 2 down vote accepted

This one reviews very well (4/5), and was lean when I installed it (only 36K) on a test comp. You don't say what OS, but it is also tested through Vista, so probably also runs on Windows 7. It is freeware.

http://eng.softq.org/small_utils.htm (Anti ScreenSaver).

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Looks like it works! – Pablo Jun 30 '11 at 5:32
    
Great, glad it worked for you. – KCotreau Jun 30 '11 at 5:34

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