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Why Open Source?

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1 Jun 20045 min read 135.5K   28   77
An explanation of the idea behind Open Source, the benefits of it and some examples of replacement Open Source programs and libraries.

Open Source logo (opensource.org)

Introduction

I bet that many of today's programmers have heard about Open Source, but don't want to use the principle in their programs. That's a shame, because it's a beautiful concept.

I've tried to make the information in this article as brief as possible, so don't look weird at the many lists in this article. This is mostly information put together from various sources, just for usefulness. And, this is my first article and English is not my native language, so don't be too hard on me. Any comments (good or bad) and suggestions are always welcome!

For those people who don't know what the Open Source concept is, here is a brief description.

The idea behind Open Source

The idea behind Open Source is that by giving the source of a program away, people can learn from it, improve it, extend it and fix bugs. The Open Source concept goes hand in hand with free software. Free like in freedom, not price.

For example: Linux. Yes, Linux is Open Source too. Linus Torvalds developed the base of this operating system, and gave away the source. Currently, multiple major companies are working on their own Open Source versions of Linux (SuSE, Red Hat, Debian and Mandrake are some examples), and even many more people are working on it too. Thanks to this, bugs are fixed very fast (advanced programmers even fix bugs while using Linux), and functionality is extended.

Your own protection

When you give away the sourcecode of your very own program, how can you be sure that people won't steal it and say that it is their own? By using a license. A license protects your rights, and can help you in a lawsuit against anyone who infringe these rights. There are many licenses that may be used for Open Source programs. You can find them here. The two most widely used licenses are the GNU General Public License (GPL) and the GNU Lesser General Public License (LGPL). Here a short explanation of why these licenses are important:

  • People may copy your code under the same license.
  • People may modify and distribute the (modified) source code.
  • People can't say that they wrote your code (it's copyrighted or 'copyleft').
  • Patents may not make the program proprietary, so patents must be licensed for everyone's free use.
  • People can't change the license applied to the source code.

The difference between the GNU General Public License (GPL) and the GNU Lesser General Public License (LGPL) is that the latter permits use of the source code in commercial programs, while the GPL does not.

Why applying the license to your company's program(s)?

If your boss agrees upon applying the GPL or LGPL to the company's program(s), then the company will have the following benefits:

  • Faster software development.

    Many people work on the same project.

  • Faster bug fixes.

    When a bug is found, there are many people available who can fix the bug in no-time!

  • More people will use the program.

    The program's sources are available, and people help develop the program. Through this, many more people will get to know about the program.

  • The wishes of the general community will be automatically integrated in the program.

    Because the general community develops the program, the program will be more likely to satisfy the general community.

  • Less development costs.

    People help developing, mostly for free.

  • Better beta testing.

    Many people use the program. People from beginners to experienced users.

Implementing the GNU (Lesser) General Public License

If you want to put your program and source code under the (L)GPL or any other license, then you'll have to put a short notice at the top of each source file. You will also have to include the license itself, and put a short notice in the documentation. You can use these steps for any license, but since the GPL is the most common used license, I'll discuss that here. Follow these steps:

Source code files

Add the following notice to the top of your source files, and change the information to suit your program:

Copyright (C) [year] [name of author]

This program is free software; you can redistribute it 
and/or modify it under the terms of the GNU General Public 
License as published by the Free Software Foundation; 
either version 2 of the License, or (at your option) any 
later version.
This program is distributed in the hope that it will be 
useful, but WITHOUT ANY WARRANTY; without even the implied 
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
PURPOSE. See the GNU General Public License for more 
details.
You should have received a copy of the GNU General Public 
License along with this program; if not, write to the Free 
Software Foundation, Inc., 59 Temple Place, Suite 330, 
Boston, MA 02111-1307 USA

Also mention how you can be contacted by paper and electronic mail.

Splash screen/About box

On the program's splash screen, or if there is no splash screen used in the About box, put the following notice:

[program name] version [versionnr.], Copyright (C) [year] [author's name]
[program name] comes with ABSOLUTELY NO WARRANTY.

And mention how the user can let the program show the license (or provide a 'License' button on the About box).

You may also want to place the OSI-approved or Open Source logo on your splash screen/About box. You can find it here.

License file

You must add a file containing the full license you use to the files that accompany the source files and your program. Usually, this is a file named COPYING.

Copyright disclaimer

If you work for an employer or school, then you should let them sign a copyright disclaimer. The how and why of this disclaimer is explained at the end of the GPL.

Open Source programs

Here is a short and incomplete list of Open Source programs that might replace (expensive) programs.

  • Windows -> Linux.
  • InstallShield installers -> NSIS (Nullsoft Scriptable Install System).
  • Photoshop & Paint Shop Pro -> The Gimp.
  • Microsoft Office -> OpenOffice.
  • Filesharing -> E-mule and Shareaza.
  • .NET Framework -> Mono.
  • MSN Messenger & AIM & ICQ -> Gaim.

Thousands of Open Source programs can be found at the following sites (among others):

Discussions

I write this update, now many months since I first wrote this article. Open Source has always been a point of discussion, and will always be. As it worked out, this article got the best votes and the worst votes, and the rating got stuck somewhere in the middle.

There was one goal I wanted to achieve by writing this article, and I met that goal: to make people think about Open Source. Why Open Source? Figure that out by yourself. This article became part of the discussion, and I hope that this discussion will be continued for a long, long time...

Links and resources

You can find any useful links here:

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


Written By
Software Developer
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This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.

Comments and Discussions

 
GeneralSoftpanorama: (slightly skeptical) Open Source Software Educational Society Pin
Tim Smith11-Nov-03 7:02
Tim Smith11-Nov-03 7:02 
GeneralOpen Source != GPL Pin
Nemanja Trifunovic11-Nov-03 5:35
Nemanja Trifunovic11-Nov-03 5:35 
GeneralRe: Open Source != GPL Pin
Member 26118811-Nov-03 6:41
Member 26118811-Nov-03 6:41 
GeneralRe: Open Source != GPL Pin
Nemanja Trifunovic11-Nov-03 7:04
Nemanja Trifunovic11-Nov-03 7:04 
GeneralRe: Open Source != GPL Pin
Member 26118811-Nov-03 7:18
Member 26118811-Nov-03 7:18 
GeneralRe: Open Source != GPL Pin
Nemanja Trifunovic12-Nov-03 5:18
Nemanja Trifunovic12-Nov-03 5:18 
GeneralRe: Open Source != GPL Pin
Gamaliel Masters9-Feb-04 18:39
Gamaliel Masters9-Feb-04 18:39 
GeneralRe: Open Source != GPL Pin
Member 26118810-Feb-04 10:08
Member 26118810-Feb-04 10:08 
First, I'd like to thank you for your participation in the discussion. Apart from writing this article, I also wanted to raise a discussion about Open Source, and find out why various people like or dislike it. And I like you comment better than a post starting with "openssux", Wink | ;) .

Gamaliel Masters wrote:
"When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish)..."
- GPL Version 2

And from your post:

"... But open source is free as in FREEDOM! Freedom to learn from it, adapt it, distribute it and use it. NOT free like no money; gratis!"
- Daniël Pelsmaeker 11 Nov '03

Note the inclusion of "DISTRIBUTE IT" in the list of freedoms. Explain to me how this does NOT refer to price. Since every person obtaining the software has the right to redistribute it and charge as well, the license DOES force a free price in a practical sense.

Exactly what is going to happen if I am charging for the exact same thing that someone else is charging less for? In general, the wise consumer will choose the cheaper provider. Now, what happens when I am charging for something that everyone else is giving away for free? In other words, why would ANYONE buy the exact same thing from someone when they can get it for free from someone else?


Both me and the license say that we mean free in the sense of freedom. In other words, this also means that you are free to charge for it. So, if I where to decide that I'd GPL my program, and later I would charge for it, then I am free to do that.
Your question: Why would ANYONE buy the exact same thing from someone when they can get it for free from someone else?
Well, this only works legally when the program is still GPL-ed when I decide to charge for it. I may charge for it to provide support, for example.
For example: SuSE can only be BOUGHT, on the other hand, it is still Open Source, and SuSE seems to make big money out of it. They provide support for it, they use the money to release new versions. They may use the money to pay for the box, printed documentation, extra CD's, DVD with future plans (for example), etc.. Things that you wouldn't get when you downloaded it.

Gamaliel Masters wrote:
The GPL talks a lot about "Freedom" while in it's own way denying freedom. In fact, I personally consider the big deal made over the difference between free use and free price to be a blatant attempt to lull casual readers into a sense that this license protects rather then destroys freedom, when in fact the GPL does more to destroy YOUR freedom (as the software creator) then it does to protect it.

The GPL is actually creating freedom, becuase without this license, the standard copyright therms apply: No copying, no modifying, no distributing... As a developer, you choose between the advantages and disadvantages of the GPL. And is the GPL actually destroying the creator's (or copyright holder's) freedom, or is it extending it? I never said that every program should be Open Source: there are many applications for which is 'just isn't suitable to GPL it.

Gamaliel Masters wrote:
The dedication of the GPL to anything but freedom is very apparent in it's parasitic nature. The parasitic nature of the GPL means that using even one line of code which is under the GPL DENYS your freedom to release the original code you have written under any other arrangement. I dislike other people attempting to control what I can an cannot do with MY original work.
When you buy a program (or use a shareware program), then you agree to the license terms. This actually tells you what you can and can't do (with the program). It's just your choice to buy or use the software under those terms. The same with GPL-ed code: if you don't agree with the license, don't use it. Other people don't attempt to control what you do with YOUR code, they actually control what you do with THEIR code. You see, it your choice to restrict yourself to any license terms, not theirs.

Gamaliel Masters wrote:
You develop an application and release it under the GPL. Later, you decide you want to sell the application. As the copyright holder you can release the code under a DIFFERENT license, so this is fine.

However, there are a couple of caveats. First, You cannot "roll back" the GPL license. Once something is under the GPL, it's governed by it forever. This means you are competing with yourself (your new commercial product is competing with your early free project).


You can actually "roll back" the GPL license, as long as you are the original author of the code, and it doesn't use any GPL-ed code. For example, the Magic Library[^] used to be GPL-ed, but now it is licensed under some other license[^]. They charge for it, they release a demo, etc...
The license says:
You are entitled to:

  • Make one copy of the Product for back-up purposes only, which copy must reproduce and include Crownwood's copyright notice.
  • Transfer the Product from one computer to another provided the Product is only used on the total number of computers authorised.
  • Use and distribute the 'assembly' built using the library of codes installed and accessible within the Product to link with and support other applications you are developing provided you do not under any circumstances distribute the source code to the Product or the Documentation.
You shall not:

  • Use or copy the Product other than as permitted by this licence;
  • Permit any third party to use the Product or the Documentation nor use the same on behalf of or for the benefit of any third party in any way whatever except as otherwise provided in this licence;
  • Modify, adapt, merge, translate, decompile, disassemble, or reverse engineer the Product, except as permitted by law; or
  • sell, assign, rent, sub-license, loan, mortgage, charge or otherwise deal in any way in the Product or Documentation or any interest in them except as expressly provided in this licence; or
  • permit the whole or any part of the Product to be combined with or incorporated in any other computer programs that are substantially similar to or compete with the Product.

To end this post:
You obviously know the pros and cons of both open and closed source development. What would be the ideal way of development in your opinion?

- Daniël Pelsmaeker
"You can have everything in life you want if you will just help enough other people get what they want."
-Zig Ziglar

GeneralRe: Open Source != GPL Pin
RuskieF4-Jun-04 2:11
RuskieF4-Jun-04 2:11 
GeneralRe: Open Source != GPL Pin
Member 2611884-Jun-04 5:34
Member 2611884-Jun-04 5:34 
GeneralRe: Open Source != GPL Pin
RuskieF4-Jun-04 6:22
RuskieF4-Jun-04 6:22 
GeneralDisagreements Pin
Ian Darling10-Nov-03 23:00
Ian Darling10-Nov-03 23:00 
GeneralRe: Disagreements Pin
Member 26118811-Nov-03 0:51
Member 26118811-Nov-03 0:51 
GeneralRe: Disagreements Pin
jkbull11-Nov-03 1:18
jkbull11-Nov-03 1:18 
GeneralRe: Disagreements Pin
Ian Darling11-Nov-03 3:00
Ian Darling11-Nov-03 3:00 
GeneralRe: Disagreements Pin
Member 26118811-Nov-03 3:32
Member 26118811-Nov-03 3:32 
GeneralRe: Disagreements Pin
Andreas Saurwein11-Nov-03 4:21
Andreas Saurwein11-Nov-03 4:21 
GeneralRe: Disagreements Pin
Member 26118811-Nov-03 4:28
Member 26118811-Nov-03 4:28 
GeneralRe: Disagreements Pin
Andreas Saurwein11-Nov-03 4:38
Andreas Saurwein11-Nov-03 4:38 
GeneralRe: Disagreements Pin
Daniel Turini11-Nov-03 6:24
Daniel Turini11-Nov-03 6:24 
GeneralRe: Disagreements Pin
Andreas Saurwein11-Nov-03 6:34
Andreas Saurwein11-Nov-03 6:34 
GeneralRe: Disagreements Pin
Member 26118811-Nov-03 6:44
Member 26118811-Nov-03 6:44 
GeneralRe: Disagreements Pin
Andreas Saurwein11-Nov-03 6:58
Andreas Saurwein11-Nov-03 6:58 
GeneralRe: Disagreements Pin
mstephens12-Nov-03 1:41
mstephens12-Nov-03 1:41 
GeneralRe: Disagreements Pin
theJazzyBrain3-Jun-04 4:40
theJazzyBrain3-Jun-04 4:40 

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