Javascript
Javascript is the most popular scripting language on the Internet. It also works in many major browsers like Google Chrome and Mozilla Firefox. Javascript was designed to add interactivity to HTML pages and is usually embedded directly into them. As mentioned, Javascript is a scripting language and it can be used without purchasing a license. Javascript mainly gives HTML designers a programming tool. Since Javascript is a scripting language with very simply "syntax", everyone is able to use it to add snippets of codes into their HTML pages. A JavaScript can also read and alter the content of an HTML element and can be used to validate form data before submitting it to a server. This in turn saves the server from extra processing.
Applets
An applet is a little application. It is an application program that uses the client's web browser to provide a user interface. An applet is basically a program that is written in the Java programming language and can also be included in a HTML page. When a browser which contains Java technology is used to view a page that contains an applet, the applet's code is transferred to the system and is then executed by the browser's Java Virtual Machine, also known as JVM. Filters
A filter is a program designed to screen or scan a certain Web page to determine if all or some of the things contained are allowed to be displayed. The origins of the contents of a certain Web page is checked against a set of rules provided by the company or the installer of the Web filter. A filter also enables a user to block out certain pages from Web sites that may interfere or contain objectionable advertising, content or pornographic images. Plug-ins
Plug-ins are applications that are downloaded as part of the Web browsers. Plug-ins are required to carry out a transaction via a Web browser. Hence, if a user is running a Web page that is designed to run something that is not standard to a browser, a plug-in is required. The most common plug-ins downloaded by many users include Adobe's Acrobat and Flash.Internet Security Suite
Internet security suites provide a wide range of tools to counter every security threat that comes along the way. Internet security suites have different programs like antivirus, antispyware and firewall included. Hence, instead of buying separate programs, Internet security suites are much better as they many tools. An Internet security suite is basically used to protect one's computer from being invaded by viruses, spywares and other bugs that may cause corruption or loss of important files. 
FTP (File Transfer Protocol)FTP is an Internet protocol that enables to send and receive files from another computer. Just like many Internet resources, FTP works by client-server architecture, where the user runs client software to connect to the server on the Internet. It also uses the Internet's TCP/IP protocols. Before the World Wide Web was created, FTP was one of the most common methods used to exchange information over the Internet. FTP is a very simple way to exchange files between computers on the Internet.
Wiki
A wiki is a website where users are able to change, add or remove contents that are on a certain Web page using a Web browser. In other words, wiki is a database that enables visitors to edit it's contents live. The building blocks of wikis are mainly the "comments" from other visitors of the site. In a "moderated wiki", wiki owners would review the comments before making an addition to the main body of the topic.
URL
URL stands for Uniform Resource Locator which is the address of a certain Web page in the World Wide Web. In other words, it is also known as the Internet address or the WWW address. It is a uniform way to locate a specific resource, be it a file or document on the Internet. Since every file on the Internet has a unique address, the URL specifies the address of a file. A Web software like a browser then uses the URL to retrieve the file from the computer on which it resides. The actual URL is a set of four numbers separated by periods. However, it is hard for us to use, hence addresses are represented in a more descriptive way in order to remember better. Thus, a URL can also be written as http://www.nationalgeographic.com/, say for example. A URL consists of a protocol (http), a host computer name (www), domain name (nationalgeographic) and a domain type (com).
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