That said, the concomitant risk of these utilities is that some of them place dangerous tools in the hands of inexperienced users. For these users, tweaking utilities provide easy access to those features OS X has hidden beneath the surface. Their Unix skills are limited to copying a command from a Web site, pasting it into Terminal, and pressing the Return key-and they’re perfectly OK with being such Terminal neophytes. I happen to live in the real world, where most of the people who use these utilities would never, ever, ever pick up a book on Unix. Now, some “purists” feel that such utilities are a scourge upon the earth, since, in their minds, these utilities keep people from actually learning about Unix and the shell. Since I’m often asked which ones I recommend, I decided it was time to check out as many as I could to see if any stand out. Over the past couple years, I’ve seen more and more of these tweaking utilities crop up, many of them very similar to others on the market. As a group, I call these software titles “tweaking” utilities because they help you tweak your Mac’s features and performance. These utilities also tend to let you perform several “maintenance” tasks that may or may not be effective (that’s the topic for another article). There are many of these software titles out there for Mac OS X, but they all have one thing in common: They offer ways to access settings and features of Mac OS X that aren’t easily available via the standard interfaces-System Preferences, applications, and various preferences dialogs. Usually commercial software or games are produced for sale or to serve a commercial purpose.You read about them on message boards and Web sites, in chat rooms and email: Someone’s Mac is having problems, and a helpful soul writes, “Download XYZ and clean your caches.” Or a user wants to know how to tweak a specific setting in Mac OS X, and several people chime in with suggestions for obscurely named utilities such as Onyx, DoktorKleanor, and TinkerTool. Even though, most trial software products are only time-limited some also have feature limitations. After that trial period (usually 15 to 90 days) the user can decide whether to buy the software or not. Trial software allows the user to evaluate the software for a limited amount of time. Demos are usually not time-limited (like Trial software) but the functionality is limited. In some cases, all the functionality is disabled until the license is purchased. Demoĭemo programs have a limited functionality for free, but charge for an advanced set of features or for the removal of advertisements from the program's interfaces. In some cases, ads may be show to the users. Basically, a product is offered Free to Play (Freemium) and the user can decide if he wants to pay the money (Premium) for additional features, services, virtual or physical goods that expand the functionality of the game. This license is commonly used for video games and it allows users to download and play the game for free. There are many different open source licenses but they all must comply with the Open Source Definition - in brief: the software can be freely used, modified and shared. Programs released under this license can be used at no cost for both personal and commercial purposes. Open Source software is software with source code that anyone can inspect, modify or enhance. Freeware products can be used free of charge for both personal and professional (commercial use). Freeware programs can be downloaded used free of charge and without any time limitations.
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