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Why Open Source?

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1 Jun 20045 min read 134.2K   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
Netherlands Netherlands
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.

Comments and Discussions

 
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 
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 
Amun-Ra wrote:
In it's basic sense the GPL actually does two things:
* Grants certain rights
* Removes certain rights


Amun-Ra wrote:
[...]it's "free with restrictions". The distinction may be subtle but it's there.
Please elaborate.

Amun-Ra wrote:
[...]re-release the code under a different licence. Certainly there is no provision to revoke the GPL once applied. Once it's out it out and there's no going back.
I never said that you can revoke the GPL for code which is released under the GPL. However, you can release *your* code under a different license, even if it was GPL-ed, it is still your code. This also means that you can't release code to which various people have contributed, under a different license.

Amun-Ra wrote:
A licence that gives me the freedom to choose how I wish to use the product. A good example is LibCurl[...]
There is almost no difference between the LGPL and the CURL-license (http://curl.haxx.se/docs/copyright.html[^] for those who are interested), except for the length.


- Daniël Pelsmaeker
Waarom je eigen woorden gebruiken als iemand anders het al beter heeft gezegd?

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 
GeneralRe: Disagreements Pin
Jim Crafton11-Nov-03 7:12
Jim Crafton11-Nov-03 7:12 
GeneralRe: Disagreements Pin
Almighty Bob11-Nov-03 7:13
Almighty Bob11-Nov-03 7:13 

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