Many search engines rely on automatically generated indices, either by themselves or in combination with other technologies, e.g.,
Aliweb <nexor.co.uk/ public/aliweb/aliweb.html>; AltaVista; Excite; Harvest <harvest.transarc.com>; HotBot; Infoseek; Lycos; Magellan <magellan.corn>; MerzScope <merzcom.
In June 1995, we made a series of tests on a number of then existing Internet indexing systems; these were
ALIWEB, DACLOD, EINet Galaxy, GNA Meta-Library, Harvest, InfoSeek, Lycos, Nikos, RBSE, World Wide Web Catalog, WebCrawler, WWW, and Yahoo.
Assembling a derived work from material already online is easy and some automatic search robots, such as HARVEST and
ALIWEB, build listings of online citations to candidate documents relevant to a topic [4].