This document discusses Unix operating systems and open source tools. It describes several popular Unix flavors including Solaris, AIX, IRIX, HP-UX, Tru64 UNIX, and MacOS. It then lists some commonly used open source tools such as OpenOffice, Miro, VLC Media Player, Firefox, and WordPress. The document outlines advantages of open source software such as availability of source code and right to modify. It notes that some companies profit from open source by offering support and training services. In conclusion, open source reduces research and development expenses for companies that utilize it.

1. OPEN SOURCE
Unix Operating Systems
Guided by
Submitted by
Mrs.usha. MCA
Tamilselvan.r
Asst.prof(o.g)
3521020053

2. CONTENTS
 Unix flavours
 Open source tools
 Advantages
 Companies profit
 Conclusion
 Refernces

3. Unix flavours

4. SOLARIS:
Sun Microsystems’ implementation, of
which there are different kinds available.
The latest version is Solaris 10 OS.
AIX:
Short for Advanced Interactive eXecutive;
IBM’s implementation, the latest release of which, is
the AIX 5L version 5.2.

5. IRIX – the proprietary version of Unix from Silicon
Graphics Inc.; the latest release of which is IRIX 6.5
HP-UX – short for Hewlett-Packard UniX; the latest
version is the HP-UX 11i
Tru64 UNIX – the Unix operating environment for HP
AlphaServer systems; Tru64 UNIX v5.1B-1 is the latest
version.

6. MACOS: Mac operating system from Apple
Computer Inc. having a Unix core; the latest
version is the Mac OS X Panther.
BSD/OS:
the Berkeley Software Distribution (BSD) Unix
implementation from Wind River; its latest
version is the BSD/OS 5.1 Internet Server Edition

7. Open source tools

8. OpenOffice: Full-featured productivity suite
A single piece of full-featured
software that will fulfill all of your
administrative needs, OpenOffice.org is a
nonprofit’s dream.

9. Miro: Watch Web video in high-def
Streaming your videos is free and
easy with the Miro Video Player . A project
of the nonprofit Participatory Culture
Foundation

10. VLC Media Player: A cross-platform
media player
This open-source media player has
cross-platform capabilities and is very easy
to use.

11. Firefox: The Web at your fingertips
Mozilla Firefox is the second most
popular web browser in the world and is
a model open-source product.

12. WordPress: World’s best blogging
platform
WordPress.org — it’s software that you can
download and configure to easily build,
manage and customize your blog or
website

13. Pidgin: Connect across chat applications
Connect instantly with staff,
volunteers and the rest of your community
regardless of which instant messaging
application they use with either Pidgin

14. Advantages

15.  The availability of the source code and the
right to modify
 The right to redistribute modifications and
improvements to the code
 The right to use the software in any way
 No ``black boxes'' are possible.

16. Companies profit

17. A number of companies have been built around a so-
called open source business model, where they license their software for
free or very inexpensively, but derive their revenues from support and
training services.
Many enterprise users of IT have been winners
because the open sourcing of commodity software such as application
servers, web server software, development tools, and other middleware
has driven down the price of middleware in general.

18. CONCLUSION:
Open source software development is
relevant to investment research because it reduces the
research and development expense of the publicly
traded companies that make use of it. Much use of
open source involves burying a component or software
artefact deep into an otherwise closed-source software
product or service

19. REFERENCES:
^ http://www.opensource.org/osd.html
^ http://www.ubuntu.com/project/about-
ubuntu/our-philosophy
^ http://source.android.com/about/philosophy.
html
^ http://source.android.com/about/philosophy.
html

20. THANK YOU