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The original article is Here
I've re-worded it slightly.
The term "open source" refers to something that can be modified, customised and shared because it's design is freely and publicly accessible.
While it originated in the context of computer software development, today the term "open source" designates a set of values that we call the open source way. Open source projects, products, or initiatives are those that embrace and celebrate open exchange, collaborative participation, rapid prototyping, transparency, meritocracy, and community development.
What is open source software?
Open source software is software whose source code is available for modification or enhancement by anyone.
"Source code" is the part of software that most computer users don't ever see; it's the code computer programmers can manipulate to change how a piece of software, a "program" or "application" works. Programmers who have access to a program's source code can improve that program by adding features or fixing parts that don't always work correctly, malfunction (bugs).
What's the difference between open source software and other types of software?
Some software has source code that cannot be modified, viewed or examined by anyone but the person, team, or organization who created it and maintains exclusive control over it. This kind of software is called "proprietary" or "closed source" software, because its source code is the property of its original authors, who are the only ones legally allowed to copy or modify it. Microsoft Word and Adobe Photoshop are examples of proprietary software.
Open source software is different. Its authors make its source code available to others who would like to view that code, copy it, learn from it, alter it, or share it. LibreOffice and the GNU Image Manipulation Program are examples of open source software. As they do with proprietary software, users must accept the terms of a license when they use open source software—but the legal terms of open source licenses differ dramatically from those of proprietary licenses. Open source software licenses promote collaboration and sharing because they allow other people to make modifications to source code and incorporate those changes into their own projects. Some open source licenses ensure that anyone who alters and then shares a program with others must also share that program's source code without charging a licensing fee for it. In other words, computer programmers can access, view, and modify open source software whenever they like—as long as they let others do the same when they share their work. In fact, they could be violating the terms of some open source licenses if they don't do this.
So as the Open Source Initiative explains, "open source" doesn't just mean access to the source code. It means that anyone should be able to modify the source code to suit his or her needs, and that no one should prevent others from doing the same. The Initiative's definition of "open source" contains several other important provisions.
Is open source software only important to computer programmers?
Open source software benefits programmers and non-programmers alike. In fact, because much of the Internet itself is built on many open source technologies—like the Linux operating system and the Apache Web server application—anyone using the Internet benefits from open source software. Every time computer users view webpages, check email, chat with friends, stream music online, or play multiplayer video games, their computers, mobile phones, or gaming consoles connect to a global network of computers that routes and transmits their data to the "local" devices they have in front of them.
The computers that do all this important work are typically located in faraway places that users don't see or can't physically access—which is why some people call these computers "remote computers." More and more, people rely on remote computers when doing things they might otherwise do on their local devices. For example, they use online word processing, email management, and image editing software that they don't install and run on their personal computers. Instead, they simply access these programs on remote computers by using a Web browser or mobile phone application.
Some people call remote computing "cloud computing," because it involves activities (like storing files, sharing photos, or watching videos) that incorporate not only local devices, but also the global network of remote computers that form an "atmosphere" around them. Cloud computing is an increasingly important aspect of everyday life with Internet-connected devices. Some cloud computing applications, like Google Docs, are closed source programs. Others, like Etherpad, are open source programs.
Cloud computing applications run "on top" of additional software that helps them operate smoothly and effectively. The software that runs "underneath" cloud computing applications acts as a platform for those applications. Cloud computing platforms can be open source or closed source. OpenStack is an example of an open source cloud computing platform.
Why do people prefer using open source software?
Many people prefer open source software because they have more control over that kind of software. They can examine the code to make sure it's not doing anything they don't want it to do, and they can change parts of it they don't like. Users who aren't programmers also benefit from open source software, because they can use this software for any purpose they wish—not merely the way someone else thinks they should.
Others like open source software because it helps them become better programmers. Because open source code is publicly accessible, students can learn to make better software by studying what others have written. They can also share their work with others, inviting comment and critique.
Some people prefer open source software because they consider it more secure and stable than proprietary software. Because anyone can view and modify open source software, someone might spot and correct errors or omissions that a program's original authors might have missed. And because so many programmers can work on a piece of open source software without asking for permission from original authors, open source software is generally fixed, updated, and upgraded quickly.
Many users prefer open source software to proprietary software for important, long-term projects. Because the source code for open source software is distributed publicly, users that rely on software for critical tasks can be sure their tools won't disappear or fall into disrepair if their original creators stop working on them.
Doesn't "open source" just mean something is free of charge?
No. This is a common misconception about what "open source" implies. Programmers can charge money for the open source software they create or to which they contribute. But because most open source licenses require them to release their source code when they sell software to others, many open source software programmers find that charging users money for software services and support (rather than for the software itself) is more lucrative. This way, their software remains free of charge and they make money helping others install, use, and troubleshoot it.
What is open source "beyond software"?
At opensource.com, we like to say that we're interested in the ways open source can be applied to the world beyond software. We like to think of open source as not only a way to develop and license computer software, but also an attitude. Approaching all aspects of life "the open source way" means expressing a willingness to share, collaborating with others in ways that are transparent (so that others can watch and join too), embracing failure as a means of improving, and expecting—even encouraging—everyone else to do the same.
It means committing to playing an active role in improving the world, which is possible only when everyone has access to the way that world is designed. The world is full of "source code"—blueprints, recipes, rules—that guide and shape the way we think and act in it. We believe this underlying code (whatever its form) should be open, accessible, and shared—so many people can have a hand in altering it for the better.
Here, we tell stories about what happens when open source values are applied to business, education, government, health, law, and any other area of life. We're a community committed to telling others how the open source way is the best way—because a love of open source is just like anything else: it's better when it's shared.
Where can I learn more about open source?
We recommend visiting the Opensource.com resources page.
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