Abstract
Within the scientific field of webometrics many research objects had been analyzed and compared with the help of webometric indicators (e.g., the performance of a whole country, a research group or an individual). This paper presents a ranking of ASEs which is based on webometric indicators. As search engines have become an essential tool for searching for information on the web many alternative search services have specialized in finding topic- or format-specific search results. By creating a ranking of these ASEs within selected categories we present an overview of the ASEs which are currently available. Through webometric indicators the ASEs were compared and the most popular ASEs of the respective categories determined.
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