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"Gatekeeper is new security feature starting in Mac OS 10.8. See http://support.apple.com/kb/HT5290 for more information about Gatekeeper features and benefits. If you are unsure what version of the Mac OS you are running, see http://its.uiowa.edu/support/article/101460.  You can find Gatekeeper settings in System Preferences > Security & Privacy > General. To disable Gatekeeper, click on the lock on the lower left of the window and type in your system password. By default Gatekeeper will only open apps purchased and downloaded from the Mac App Store or from a list of "identified developers" that have been given the ok from Apple by obtaining an unique Developer ID.  To install other apps, select the option to install from Anywhere."

If you're a support professional, you know all about having multiple versions of software on your system. You need to cover the bases by having all the versions that your users may blow up. However, even if you're not a techie, you may be one of those more cautious people who would like to keep the old version of your software running while installing/learning the new version...just in case!

Getting Started with Rails This guide covers getting up and running with Ruby on Rails. After reading it, you should be familiar with: Installing Rails, creating a new Rails application, and connecting your application to a database The general layout of a Rails application The basic principles of MVC (Model, View Controller) and RESTful design How to quickly generate the starting pieces of a Rails application

"Free Screen Capture Tool on Mac DuckCapture for Mac is a free screen capture tool for Apple Mac OS X! The major functionalities have been introduced in Free Screen Capture Tool, this article will be focusing on installation and usage on Mac OS X."