Open NMS is a free and open-source initiative grade network monitoring and network management platform.

Trace file is a document file, consists of every incident happen in a simulation.

National Resource Center for Free and Open Source Software is an institution of Government of FOSS in India. To Help in development of FOSS in India.

A significant output of simulation is the trace files. Trace files can document every incident that happened in the simulation and are used for examination.

Richard Stallman the free software movement, the beginnings of open source. Collaboration was king in the software world when Richard Stallman joined MIT's Artificial Intelligence Lab in 1971 as a freshman at Harvard University.

Organization related to open source:
(i)  Apache Software Foundation
(ii)  Free Software Foundation
(iii) Linux Foundation
(iv) Open Source Initiative.

NS2, OPEN NMS, Ubuntu, MySQL, PDF Creator, Open Office, 7zip GNUCASH, GIMP, BLENDER, AUDACITY, VLC, MOZILA FIREFOX, MAGENTO, ANDROID, PHP.

(i) Software can be used without any cost and restrictions
(ii) Sharing of ideas with the team.
(ii) User friendly.
(iv) We can add the most required features in the software.
(v) We can learn many ideas.
(vi) We can make our program writing skills more efficient

Types of open source licenses are:
(i) Apache License 2.0
(ii) BSD 3-Clause 'New' or 'Revised' license
(iii) BSD 2-Clause "simplified" or "Free BSD" license
(iv) GNU General Public License (GPL)
(v) GNU Library or "Lesser" General Public License (LGPL)
(vi) MIT license
(vii) Mozilla Public License 2.0
(viii) Common Development and Distribution License
(ix) Eclipse Public License
(i) Apache License:
Apache License version 2.0 rights can be applied to both copyrights and patents. Some of the license can be applied only to copyrights and not patents some details of Apache License and Rights are never ending, Worldwide Authority of Rights, Rights for No few or Royalty, Rights are Irrevocable.
(ii) BSD License:
BSD license is a part of a family of the free software license that have much fewer restrictions in distribution as compared to other free software license. Two important version are:
(1) The New BSD License/The NEW Modified BSD License (3 clause "new" or "Revised" license)
(2) The simplified BSD License/Free BSD License (2-clause "simplified" or "free BSD" license)
Both have been accepted as open source license by the open source initiative.
The primary difference between the New and the simplified BSD License is that simplified BSD license emits this clause.
(iii) GNU General Public License:
The General Public License are copy the software, Distribution, charge a fee, change the code base.
(iv) GNU Lesser General Public License:
It grants fewer right to work than GNU GPL. It's generally appropriate for libraries and projects that want to allow linking from non-GPL and non-open-source software. GPL. requires any other project or source that is using the project under GPL also be licensed as GPL: GPL licensed code can't be used for paid and proprietary software.
(v) MIT License:
It's the shortest and most used popular open source license. The main giving of this licnese are copy, modify, merge, publish, distribute, sublicense, etc.

Open Source Software	Proprietary Software
It refers to the software that is developed and tested through open collaboration.	It refers to the software that is solely owned by the individual or the organization that developed it.
Anyone with the academic knowledge can access, inspect modify and redistribute the source code.	Only the owner or publisher who holds the legal property rights of the source code can access it.
The project is managed by an open  source community of developers and programmers.	The project is managed by a closed group of individuals or team that developed it.
They are not aimed at unskilled users outside of the programming community.	They are focused on a limited market of both skilled and unskilled and users.
It provides better flexibility which means more freedom which encourages innovation.	There is a very limited scope of innovation with the restrictions and all.
Examples: Android, Firefox, Libreoffice, Ubuntu, Gname etc..	Examples: Windows, mac Os, iTunes, Google earth. Adobe flash etc.