Downloading Appsomnia 1.2 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this Mac application is AppPlunger. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The software is categorized as Productivity Tools.
From the developer:
Appsomnia is a simple top bar application which prevents your Mac from going to sleep, starting screensaver, or dimming the screen when it’s activated. It stays on your top bar and you can only click on it to activate or deactivate. You can also right-click on the icon to activate it for a limited period of time. In addition, you can enable/disable notifications in order to be sure when it it’s active or not.
You may want to check out more Mac applications, such as iAlarm, Chronos or iCal Reply Checker, which might be related to Appsomnia.