There are many Web indexes, and this page covers only four of the most powerful. Searching the Web page. Alta Vista offers a choice of Simple Query and Advanced Query search modes. Advanced Querywas among the first Web search engines to provide full nested Boolean searching, truncation, and limited proximity searching. May use truncation within phrases.
Lower case retrieves pages woth words containing the letters in both lower and upper case.
Upper case retrieves only when words contain the letters in uppercase. Field name in lower case followed by colon. Limit by language or range of dates. Excite NetSearch Help Indexes every word in over 55 million Web pages, with a separate index of over 60,000 brief reviews of Web sites, Usenet newsgroups articles, and two weeks of Usenet classified ads. Uses a best match algorithm to combine words in a search statement.