Open-source software refers to software that that has licensing terms that allows modification and distribution.
In some cases a software author will decide to make his/her program available to the public at no charge. This is usually termed "freeware" and although free is still protected by copyright. It cannot be duplicated, redistributed, or modified, for anything other than personal use, without permission.
Not at all. Closed source is more difficult to service, maintain and modify. Open Source provides complete transparency. Open source software is neither good or bad but simply a set of license terms and conditions that dictate how the software needs to be licensed if it is modified and redistributed. One reason developers can modify it in the first place is that the underlying source code--rather than just an executable file--is distribted as one of these terms and conditions (depending on whose definition you use there are either 4 or 10 of these terms and conditions and there are all kinds of variations--dozens if not hundreds--of open source licenses).
It can be modified or maintained since source code is available.
Free software is software that makes few or no restrictions on what you can do with it or the source code. According to the Free Software Foundation, in order for software to be considered "free", it must: * Allow use of the program for any purpose. * Have the source code available, to see how it works and change it. * Allow you to distribute unmodified copies of the software * Allow you to modify and release the changes to the program. "Open-source" software only needs to meet the second criteria. Software can have it's source available, but forbid you to release it commercially, or release modified copies of the binaries / source.
One can search for free software from File Hippo, FSF, CNET, and Sourceforge websites. Free software allows the users to use the software in anyway they want, such as, download, run, change the program from the source code as well as redistribute the exact or modified copies of the software.
Open source software is software that allows the source code to be used. Oftentimes, they are free to use. Open source software is copyrighted.
It depends on the usage license for the software; some software *can* be freely distributed and modified, however most software - including some open source software - have distribution requirements (for example, there is often a requirement that the software is unmodified or the original author is acknowledged).
I prefer open source software.
A way of designing software so that it cannot be converted back into source code or be altered or controlled except as designed without being detected.
The answer is in the question itself. Open-source software has it's source code available to everyone. Closed-source software does not.
Open source software (OSS) is defined as computer software for which the source code and certain other rights normally reserved for copyright holders are provided under a software license that meets the Open Source Definition or that is in the public domain. This permits users to use, change, and improve the software, and to redistribute it in modified or unmodified forms. It is very often developed in a public, collaborative manner. Open source software is the most prominent example of open source development and often compared to user-generated content. The term open source software originated as part of a marketing campaign for free software. A report by Standish Group states that adoption of open source software models has resulted in savings of about $60 billion per year to consumers.The term open source ("OS") describes a type of production, dissemination and exploitation of software opposed to the so-called "proprietary" way of distribution. OS-software is usually produced in a collaborative process by a web-based community. The ultimate aim is to create stable, compatible and free software. In order to achieve this, the source code is "open" for anyone to see and distributed along with the software and the according license. By these means, any user of the software has access to the code, can learn about it and develop it further Free use, modification and distribution is the core concept of OS. Many, but not all OS-licenses are distributed with a so-called copyleft-clause. Copyleft licenses do not only license the aforementioned types of exploitation, they do so only under the condition of re-distribution under the same license. The Open Source Initiative awards a cachet to all licenses that are in compliance with its Open Source Definition, which is a worldwide acknowledged standard. OS-licenses have been successfully tested in courts.
In IT terms, OSS can refer to 'Open-Source Software', which is software that is meant to be modified by users however they like. OSS can also refer to 'Operations Support Systems', which is the term for a computer system used by a telecommunications company.