modify someone elses web application

  • Gasolene
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  • Gasolene
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Post 3+ Months Ago

legal question:
I have a client with a content engine that he wants modified. the content engine was developed by another company, he says he has purchased the engine but no longer wants to use that company for $$ reasons.

can I modify (add components) the content engine or is that infrenging on the copyright of the original creator?

example he wanted the database expanded, and new functions added, he also wants to remove all the references to the company that designed it, ie: remove footer with link to original creators site.
  • Anonymous
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Post 3+ Months Ago

  • ATNO/TW
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Post 3+ Months Ago

Gasolene, This is a question that should be asked of an attorney. Unless someone here is an attorney, or has gone through this exact same thing, you'll not be garanteed acurate advice.
  • Bigwebmaster
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Post 3+ Months Ago

I suggest you read the terms and conditions set forth by the company your client originally purchased the script from. There are many different types of licenses companies issue, such as GNU GPL and other open source licenses which would most likely allow you to modify the code. However, there are many companies that issue licenses that would not permit you to modify the code in any way.

Here are many types of licenses that are commonly used by software companies:

Academic Free License
Apache Software License
Apache License, 2.0
Apple Public Source License
Artistic license
Attribution Assurance Licenses
BSD license
Common Public License
CUA Office Public License Version 1.0
EU DataGrid Software License
Eiffel Forum License
Eiffel Forum License V2.0
Entessa Public License
Fair License
Frameworx License
GNU General Public License (GPL)
GNU Library or "Lesser" General Public License (LGPL)
Lucent Public License (Plan9)
Lucent Public License Version 1.02
IBM Public License
Intel Open Source License
Historical Permission Notice and Disclaimer
Jabber Open Source License
MIT license
MITRE Collaborative Virtual Workspace License (CVW License)
Motosoto License
Mozilla Public License 1.0 (MPL)
Mozilla Public License 1.1 (MPL)
Naumen Public License
Nethack General Public License
Nokia Open Source License
OCLC Research Public License 2.0
Open Group Test Suite License
Open Software License
PHP License
Python license (CNRI Python License)
Python Software Foundation License
Qt Public License (QPL)
RealNetworks Public Source License V1.0
Reciprocal Public License
Ricoh Source Code Public License
Sleepycat License
Sun Industry Standards Source License (SISSL)
Sun Public License
Sybase Open Watcom Public License 1.0
University of Illinois/NCSA Open Source License
Vovida Software License v. 1.0
W3C License
wxWindows Library License
X.Net License
Zope Public License
zlib/libpng license

You can see the full list and specific details about each one here:

http://www.opensource.org/licenses/gpl-license.php
  • Axe
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Post 3+ Months Ago

I would concur with BigWeb that it depends on the license under which the software was modified...

However, if they have paid for a license for the software, I'm sure the "fair use" section of the Copyright laws allows them to modify it for their own personal use at least, although they can't re-release/resell it (unless it's under a compatible license, such as the GPL - although original copyright notices would still have to be held in place, even in this case).

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