Open Source and Free Software

The first known use of the phrase "free open source software" on Usenet was in a posting on 18 March 1998, just a month after the term "open source" itself was coined.

The fundamental difference between the two movements is in their values, their ways of looking at the world. For the Open Source movement, the issue of whether software should be open source is a practical question, not an ethical one. As one person put it, “Open source is a development methodology; free software is a social movement.” For the Open Source movement, non-free software is a suboptimal solution. For the Free Software movement, non-free software is a social problem and free software is the solution


“Free software” is a matter of liberty, not price. To understand the concept, you should think of “free” as in “free speech,” not as in “free beer.”

Free software is a matter of the users' freedom to run, copy, distribute, study, change and improve the software. More precisely, it means that the program's users have the four essential freedoms:

* The freedom to run the program, for any purpose (freedom 0).
* The freedom to study how the program works, and change it to make it do what you wish (freedom 1). Access to the source code is a precondition for this.
* The freedom to redistribute copies so you can help your neighbor (freedom 2).
* The freedom to distribute copies of your modified versions to others (freedom 3). By doing this you can give the whole community a chance to benefit from your changes. Access to the source code is a precondition for this.

A program is free software if users have all of these freedoms. Thus, you should be free to redistribute copies, either with or without modifications, either gratis or charging a fee for distribution, to anyone anywhere. Being free to do these things means (among other things) that you do not have to ask or pay for permission to do so.

Ref://http://www.gnu.org/philosophy/free-software-for-freedom.html

Sanjib Chatterjee
MAT3 Impex Pvt Ltd.
CF-318,Sector-I
Salt Lake Kolkata-700 064

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Cloud Computing

Continuation from Web Technology Revolution::
The main objective of cloud computing are on-demand self-service,resource pooling,fast and flexible to scale out and scale in and fast and secure network access.
Cloud computing have five characteristics out of which three are service model and four are deployment model.
Service model:-
(i) Softwares as a service[SaaS]
(ii) Infrastructure as a service [IaaS] i.e hardware as a service
(iii) Platform as a service[Paas]

Deployment model:-
(i) Public cloud which is used by multiple tenant and managed by service provider
(ii) Private cloud whic is used by a single organization with having five characteristics of cloud.
(iii) Community cloud is partly private cloude which is used by defined group of certain tenant.
(iv) hybrid cloud is intensionally private cloude but it may run in public cloud for overflow.

Sanjib Chatterjee
Senior Manager
MAT3Impex Pvt. Ltd.
CF-318, Sector-I,Salt Lake
Kolkata-700064
http://mat3impex.com