Open source software (OSS) has risen to great prominence. This software is also defined as computer software for which the source code and certain other rights normally reserved for copyright holders are provided under a software license that meets the Open Source Definition or that is in the public domain. It is also the most prominent example of open source development and often compared to user-generated content. Open Source software is open, all of the defects and security flaws are easily found. The term open source software originated as part of a marketing campaign for free software.

In the last year of 2006 there are 20 top most popular programs. This are:

1.    7-Zip - file compression + 7Zip Portable
2.    Abiword - create word documents + Abi Portable
3.    Audacity - sound editing and effects + Audacity Portable
4.    Blender 3D - 3D modeling and animation + Blender Portable
5.    ClamWin - antivirus and antispyware scanner + ClamWin Portable
6.    Eraser - erases your data securely + Eraser Portable
7.    FileZilla - ftp client + FileZilla Portable
8.    Firefox - browser + Firefox Portable
9.    Gaim - instant messenger + Gaim Portable
10.    Ganttproject - scheduling , resource management, calendaring
11.    Gimp - GimpShop - image manipulation + Gimp Portable
12.    Media Portal - media center
13.    NVU - html editor + NVU Portable
14.    OpenOffice.org - office suite + Open Office.org Portable
15.    PDFCreator - create PDF files
16.    RSSOwl - rss reader
17.    TaskSwitchXP - advanced task management utility
18.    Thunderbird - e-mail client + Thunderbird Portable
19.    VLC Media Player - media player + VLC Portable
20.    WebHTTrack - web site copier

Office software is also called office suit or productivity suit. It is a collection of programs intended to be used by typical clerical workers and knowledge workers. The currently dominant office suites are Microsoft Office. Microsoft office is available only in Microsoft windows. Microsoft Office is one of the most used programs in the world after Microsoft Windows. It is a collection of a core croup of programs provided as a collection of inclusive specific single programs to be able to install on a computer rather than purchasing each one individually. There are lots of edition in office suits. But the most basic is the standard edition.

Office software has been uses by the business people, and most especially by the students. Office software is a big help to all. Especially for the business people and for the students. As we all know that mostly students now know how to use computers. And office software helps them to make there project much easier and faster.
There are typical office software suits, this are Word processor, Spreadsheet, Presentation program, Database, Graphics suite, Communication, Email client, Personal information manager, Note taking program, Groupware, Formula editor, Web log analysis software.

If you’re looking for a perfect suit for your business, choose the best.

Microsoft PowerPoint is a presentation program and it was developed by Microsoft. It is a very powerful program used to create and manipulate slideshows. And it was commonly used in advertising because of its wide range of visual effects. PowerPoint presentations consist of a number of individual pages or slides. The “slide” analogy is a reference to the slide projector, a device that has become obsolete due to the use of PowerPoint and other presentation software. Today power point has been uses by business people, educator, student and trainers.

It’s not hard to create a very simple PowerPoint presentation with text and some graphics. When you start to get better, the more powerful features are very useful. Interactive PowerPoint have anything from a button to move to the next slide to a full compliment of hyperlinks that function like a nested website.

As PowerPoint’s style, animation, and multimedia abilities have become more sophisticated, and as the application has generally made it easier to produce presentations the difference in needs and desires of presenters and audiences has become more noticeable.

The benefit of PowerPoint is continuously debated, but both supporters and detractors have insufficient empirical evidence. There are no compelling results to prove or disprove that PowerPoint is more effective for learner retention than traditional presentation methods