This document discusses web browsers and provides information on their history, types, advantages, and disadvantages. It describes how the first web browser was invented by Tim Berners-Lee in 1990 and the development of early browsers like Erwise and Mosaic. Popular modern browsers covered include Netscape, Internet Explorer, Firefox, Safari, Chrome, Opera, and Microsoft Edge. The document also outlines some key advantages of web browsers like low cost and facilitating information exchange, as well as potential disadvantages like overload and lack of quality control.

1. WEB BROWSERS
PRESENTED BY:
T.DHANALAKSHMI

2. CONTENTS
• INTRODUCTION
• HISTORY
• TYPES OF WEB BROWSERS
• ADVANTAGES
• DISADVANTAGES
• CONCLUSION

3. INTRODUCTION
Web browsers allow a user to quickly and
easily access information provided on many
web pages at many websites by traversing
these links. Web browsers format HTML
information for display so the appearance of a
web pages many differs between browsers.

4. HISTORY
The first web browser was invented in 1990 by
Sir Tim Berners-Lee. Berners-Lee is the director
of the World Wide Web Consortium.
The first commonly available web
browser with a graphical user interface was
Erwise. The development of Erwise was
initiated by Robert Cailliau.
In 1993, browser software was further
innovated by Marc Andreessen with the
release of Mosaic, "the world's first popular
browser".
FOUNDER OF WWW
(WORLDWIDEWEB)
SIR TIMBL

5. TYPES OF WEB BROWSERS
• NETSCAPE
• INTERNET EXPLORER
• MOZILLA FIREFOX
• SAFARI
• TORCH
• UC BROWSER
• OPERA
• GOOGLE CHROME
• MICROSOFT EDGE

6. NETSCAPE
Marc Andreessen was the inventor of Netscape.he
released the Mosaic-influenced Netscape Navigator in
1994, which quickly became the world's most popular
browser, accounting for 90% of all web use at its peak.
Netscape Browser (or Netscape 8) is the
eighth major release of the Netscape series of web
browsers, now all discontinued. It was published by AOL,
but developed by Mercurial Communications, and
originally released for Windows on May 19, 2005.

7. INTERNET EXPLORER
IT was developed by Microsoft, and initially released at
August 16th 1995.Internet Explorer was one of the most
widely used web browsers, attaining a peak of about
95% usage share during 2002 and 2003.
This came after it managed to win the first
browser war against Netscape, which was the dominant
browser in the 1990s.
Its usage share has since declined
with the launch of Firefox (2004) and Google Chrome
(2008), and with the growing popularity of operating
systems such as OS X, Linux, iOS and Android that do not
run Internet Explorer.

8. MOZILLA FIREFOX
FIREFOX was Initially released on September 23rd 2002.it
is also named as "PHOENIX". Firefox is available for
Windows, OS X and Linux operating systems, with its
mobile versions available for Android, and Firefox OS;
where all of these versions use the Gecko
layout engine to render web pages, which implements
current and anticipated web standards, but an additional
version released in late 2015 – Firefox for iOS has also been
made available – that doesn't use Gecko.

9. SAFARI
Safari is a web browser developed by Apple based on
the WebKit engine. First released in 7th January 2003
with Mac OS X Panther, a mobile version has been
included in iOS devices since the introduction of the
iPhone in 2007. It is the default browser on Apple
devices. A Windows version, now discontinued, was
available from 2007 to 2012.

10. TORCH
Torch is based on the Chromium source code. Torch's
most recent version, 39.0.0.9626, uses Chromium
version 40, making it compatible with all add-ons and
extensions available in the Chrome store. On June 18,
2013, Torch announced that it had surpassed 10 million
active users.it is a commercially freeware.

11. UC BROWSER
UC Browser is a mobile browser developed by Chinese
mobile Internet company UC Web. Originally launched
in April 2004 as a J2ME-only application, it is available
on platforms including Android, iOS, Windows Phone,
Symbian, Java ME, and BlackBerry. According to
StatCounter, UC browser is the second most used
mobile web browser worldwide, passing Safari in
October 2015.

12. OPERA
Opera is a web browser developed by Opera Software.
The latest version is available for Microsoft Windows, OS
X, and Linux operating systems, and uses the Blink layout
engine. An earlier version using the Presto layout engine
is still available, and additionally runs on FreeBSD
systems.
According to Opera Software, the browser had
more than 350 million users worldwide in the 4th
quarter 2014. Total Opera mobile users reached 291
million in June 2015.

13. GOOGLE CHROME
Google Chrome is a freeware web browser developed
by Google. It used the WebKit layout engine until
version 27 and with the exception of its iOS releases,
from version 28 and beyond uses the WebKit fork
Blink. It was first released as a beta version for
Microsoft Windows on September 2, 2008, and as a
stable public release on December 11, 2008.

14. GOOGLE PANDA
Google Panda is a change to Google's search
results ranking algorithm that was first released
in February 2011. The change aimed to lower
the rank of "low-quality sites" or "thin sites",
and return higher-quality sites near the top of
the search results.

15. GOOGLE PENGUIN
Google Penguin is a codename for a Google
algorithm update that was first announced on
April 24, 2012. The update is aimed at
decreasing search engine rankings of websites
that violate Google’s Webmaster Guidelines by
using now declared black-hat SEO techniques
involved in increasing artificially the ranking of a
webpage by manipulating the number of links
pointing to the page.

16. GOOGLE HUMMINGBIRD
Google started using Hummingbird about August 30,
2013, and announced the change on September 26 on
the eve of the company's 15th anniversary.
Google said that Hummingbird is
paying more attention to each word in a query,
ensuring that the whole query the whole sentence or
conversation or meaning is taken into account.

17. GOOGLE PIGEON
Google Pigeon is the code name given to
Google latest local search algorithm update.
This update was released on July 24, 2014.
The update is aimed to increase the ranking
of local listing in a search.
The changes will also effect the search results
shown in Google Maps along with the Google
regular search results. As of now its release in
US English results and will shortly released in
other languages and locations too.

18. MICROSOFT EDGE
Microsoft Edge is a web browser developed by
Microsoft and included in the company's Windows 10
operating systems, replacing Internet Explorer as the
default web browser on all device classes. It does not
support browser extensions, ActiveX, or Browser
Helper Objects, but adds new features such as
integration with Cortana, annotation tools, and a
reading mode.

19. ADVANTAGES
• Availability of mainly free information
• Low cost of initial connection
• Reduces the costs of divulgation
• The same protocol of communication can be used for all the services
• Facilitates rapid interactive communication
• Facilitates the exchange of huge volumes of data
• Facilitates the establishment of professional contact
• No barriers to divulgation
• Facilitates access to different sources of information, which is continously up-dated
• Facilitates management of companies information system
• lt is accesible from anywhere
• It has become the global media

20. DISADVANTAGES
• Danger of overload and excess information
• It requires an efficient information search strategy
• The search can be slow
• It is difficult to filter and prioritize information
• No guarantee of finding what one is looking for
• There is a lot of apparently unconnected information
• Net becomes overloaded because of large number of users
• No regulation
• No quality control over available data
• The Case with which information can be constantly up-dated
can cause problems of refencing

21. CONCLUSION
A web browser opens a connection to a web server based on the
URL entered by the user. The URL specifies the protocol to use,
typically http for web servers. The last entry in the URL includes the
directory and file names that the browser is looking for.
Web Browsers are of different kinds but all are used to
search what we want from web, the browsers differ from each and
every one, the action they perform was same. Some browsers
above are more effective compared to others.

23. ANY QUERIES ?