There is nothing "following" to select.
search engine
Search engine is a program which to do retrieval of data, files, and documents from a database or network, especially for the Internet.
A browser is used to view and navigate webpages on the internet.
Google is a internet search program. What you do is you type something in the search bar and you type what you want to look up and google searches the internet for you and looks up the closest thing to your search query.
Idman is an "Internet Download manager". It is a program that helps download audio, documents, audio and software, etc. It is reported to make downloading easier and faster.
Not all documents. Some documents you can right-click and 'open with' another program such as Notepad.
Search engine is a program that searches documents for specified keywords and returns a list of the documents where the keywords were found. Portal refers to a Web site or service that offers a broad array of resources and services, such as e-mail, forums and online shopping malls.
WHOIS
A program that searches documents for specified keywords and returns a list of the documents where the keywords were found. Although search engine is really a general class of programs, the term is often used to specifically describe systems like Google, Alta Vista and Excite that enable users to search for documents on the World Wide Web and USENET newsgroups.
A search engine.
A request handler is a computer program. The program handles and processes requests such as searches and inquiries for things.
Adobe reader is a computer program, usually available for free off of the internet. Adobe reader helps a person read. pdf documents, and is also able to help people read and sign important documents.