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Caffeine 1.6

Simulate keypresses to prevent your PC sleeping

by Mike Williams

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Based on 0 ratings
License: Freeware
Operating Systems: Windows 7 (32 bit), Windows 7 (64 bit), Windows 8, Windows Phone, Windows Server, Windows Vista (32 bit), Windows Vista (64 bit), Windows XP
Languages: English
Software Cost: Free
Date Updated: 27 January 2014
Watchlist: Add download to my watchlist
Downloads To Date: 934
Developer: ZHorn Software
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Caffeine 1.6
Simulate keypresses to prevent your PC sleeping

Caffeine is a portable free tool which can help to prevent your screensaver activating, or your PC going to sleep. Just launch the program and it simulates a keypress every 59 seconds, so your machine thinks you're still working at the keyboard, and won't shut down.

Caffeine adds an icon to the system tray where you can control how it works. Right-click and you're able to turn the program on for only an hour, for example. It will then keep your system awake for that time, convenient if you're not working at the keyboard but need it to remain active (you're giving a presentation, perhaps), before returning to normal.

The program provides several command line switches to control how it works. There are options to choose which keypress is simulated, for instance, and how often it's repeated. You can choose whether it's active on launch, or how long it will be active. You get to decide whether Caffeine works from your system tray, or a taskbar button, and there's even an option to prevent sleep, but allow the screensaver to start.

Conveniently, all this comes packaged in a single tiny executable (a mere 40KB) which, the author claims, runs on anything from Windows 98 upwards.


An effective way to gain a little extra control over your PC power settings.

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Spotlight: Free Full Software

WhatsApp Messenger 2.16.11

Free Full Commercial Software

WhatsApp Messenger is the world's most popular instant messaging app for smartphones.

You can use it to send and receive text and voice messages, photos, videos, even call your friends in other countries, and because it uses your phone's internet connection it might not cost you anything at all (depending on whether you'll pay data charges).

It's easy to set up and use. There's no need to create and remember new account names or pins because it works with your phone number, and uses your regular address book to find and connect you with friends who use WhatsApp already.

You can talk one-to-one or in group chats, and because you're always logged in there's no way to miss messages. Even if your phone is turned off, WhatsApp will save your messages and display them as soon as you're back online.

There's plenty more (location sharing, contact exchange, message broadcasting) and the app is free for a year, currently $0.99/ year afterwards.

What's new in 2.16.11?

 - Due to a bug in iOS 10, your notification sounds may not properly play until you restart your iPhone (press and hold the power and home buttons for 10 seconds).
- In groups, you can now mention specific people to get their attention by typing the @ symbol and choosing someone from the picker. 
- When forwarding messages, you can now send to multiple chats at once 
- Ask Siri to send WhatsApp messages or place WhatsApp calls (iOS 10+) 
- Answer WhatsApp calls right from your lock screen, just like a standard phone call (iOS 10+) 
- A new Widget lets you quickly jump to a recent chat or see which chats have unread messages (iOS 10+)