摘要：Webometric tools such as search engines and crawlers are used in Web Impact analysis. Popular search engines are either restricted or withdrew its link searches facilities. Link counts had been available from commercial search engines that ended in 2012. Google, Bing and Yahoo! allow using ‘site’ command for their users. This paper reviews the Webometric tools used to collect data for Web Impact Assessment studies and its status as on date. Web Impact Assessment studies are possible using Google and Bing search engines. Webometric Analyst is an exceptional software to extract quantitative data from web. This tool used Bing’s Application Programming Interface (API) to pull out all returns URLs (sub domains) directly to the hard disk which will be useful for further data analysis. ‘Webometric Analyst’ utilised Bing’s API limited free search facility and possesses a range of inbuilt functions that are complete and self-contained in addition to a set of powerful and flexible commands that can be combined for different purposes, So, it will be lead to the conclusion that it is the only best tool available today for Web Impact Assessment Studies.
关键词：Webometrics; Web Impact Assessment; Search Engines; Crawlers; Search Tools
