iCanSleep is a free, open source status bar tool to prevent your Mac from sleeping for a while.
The main point of this tool is to allow the Mac to go back to "I can sleep" mode again after the "no sleep" period is over (hence the name) without having to change Energy Saver settings.
It also includes a feature to watch for folder activity, in order to prevent the Mac to go to sleep during long running tasks (video encoding, downloading, copying, backup'ing, rendering, recording, etc.) automatically, and only for as long as the task is running.
Find more info and download links on the official iCanSleep page: http://www.koboldtouch.com/display/ICS
Compared to similar tools (Caffeine, InsomniaX) it has these unique features:
- automatically reinstates the normal sleep schedule after the "prevent sleep" period
- allows the display to go to sleep
- monitors a custom folder (and its subfolders) for activity (add/remove/write files/folders)
- if folder activity is detected, can prevent Mac from sleeping for a preset time
- allows you to enter a custom "prevent sleep" time in minutes
- complete source code available - make your own modifications!
Copyright (C) 2013 Steffen Itterheim http://www.learn-cocos2d.com http://www.koboldtouch.com
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.