Caffeine is a free and portable tool which can prevent your PC from going into sleep mode.
The way the application works is by simulating a keystroke every minute or so, thus preventing your system from entering into hibernate, sleep or even running a screensaver.
Accessing Caffeine is easy, as it permanently resides in the system tray and an indication if it's active or not is when the cup of coffee is full or empty. In terms of system resources, Caffeine is light and not noticeable.
All in all, it's a useful application for those who'd like their PC to stay awake, overriding any specific power plan schemes or manufacturer-installed power management applications.Compability and license
Caffeine is licensed as freeware for the Windows (32-bit and 64-bit) operating system / platform from windows boot software without restrictions. Caffeine 1.64 is available to all software users as a free download (Freeware).
Compatibility with this locking prevention software may vary, but will generally run fine under Microsoft Windows 10, 8, 8.1, 7, Vista and XP on either a 32-bit or 64-bit setup. A separate x64 version may be available from Zhorn Software. This download is distributed as caffeine.zip.
We have tested Caffeine 1.64 against malware with several different programs. We certify that this program is clean of viruses, malware and trojans.