Comparing Internet Search Engines ( Andrew Kingoff ; IEEE Computer Magazine 1997-04)

Unix Programming FAQ How do I compare strings using wildcards? []

Unix Programming FAQ How do I compare strings using regular expressions? []

Topical AND Keyword Based Search Engines? [ 2000/10/16]

Is the Internet Becoming Unsearchable? [ 1999/12/14]

Questions and Answers

SPINdex Site Searching Suite - Perl-based site searching suite. Currently a live (real-time) search engine, with plans on adding enterprise-level indexing and database searching very soon. {(L)GPL}

grep - package includes GNU 'grep', 'egrep', and 'fgrep', which find lines that match entered patterns. {GPL,GNU}

whichman-2.0 - Approximate matching utilities to search for manpages and files

freegrep-0.16 - An implementation of grep(1) under a BSD-friendly license

p5-DelimMatch-1.04 - Perl extension to find regexp delimited strings with proper nesting

p5-String-Approx-3.15 - Perl extension for approximate matching (fuzzy matching)

PerlTools-1.2 - Perl regular expressions for Java

regexx-0.98.1 - Regexx is a complete regular expressions C++ solution

tkregexp-2.1 - An interactive regexp design tool

re2c-0.9.1 - Compile regular expression to C (much faster final code than flex)

glimpse-4.12.6 - Text search engine

ja-namazu-1.3.0.11 - Search engine software intended for easy use

htdig-3.1.6 - A www indexing and searching system

ja-lookup-mule-1.3 - Search interface on Emacsen for CD-ROM books, etc

ja-lookup-xemacs21-mule-1.3 - Search interface on Emacsen for CD-ROM books, etc

mnogosearch-3.1.19_1 - Full featured SQL-based hypertext search engine

ssserver-1.0 - Adds the search capability to a Web site

udmsearch-3.0.23 - Full featured SQL-based hypertext search engine

p5-Text-Query-0.07 - Query processing framework

ja-lookup-emacs20-1.3 - Search interface on Emacsen for CD-ROM books, etc

txt2regex-0.7 - A Regular Expression "wizard"

ruby-flex_rb-0.10 - Ruby flex regular expression matching extension

ja-migemo-0.32,1 - Japanese incremental search tool

ja-migemo-emacs21-0.32,1 - Japanese incremental search tool for emacs21

jakarta-oro-2.0.1 - Perl/awk/sh regular expressions for Java

jakarta-regexp-1.2 - Regular expressions for Java

p5-Getopt-Declare-1.09 - Declaratively Expressed Command-Line Arguments via Regular Expressions

p5-Regexp-Common-0.01 - Regexp::Common - Provide commonly requested regular expressions

p5-XML-RegExp-0.03 - Regular expressions for XML tokens

replaceit-1.0.0 - A light replacement to the combination of sed/awk/grep/head/tail

ja-lookup-emacs21-1.3 - Search interface on Emacsen for CD-ROM books, etc

fastgrep - Reposting of world's fastest grep {oss}

regexpfix - Regexp(3) improvement {oss}

bmfix - Fix to B/M/G for odd address optimization {oss}

gnugrep1.3.pch - GNU Grep 1.2->1.3 patch kit {oss}

egrep - More Pep for Boyer-Moore Grep {oss}

grok - match regular expressions and correct errors, V1.0, {oss}

match1.2 - Fast grep for Vaxen {oss}

regex - Ed(1)/regex(3)-compatible reg. exp. package {oss}

gnugrep - Gnu E?GREP (it's fast) {oss}

bm1.2 - Bm version 1.2 (blindingly fast "fgrep") {oss}

agrep-2.01 - very fast grep with approximate pattern matching {oss}

filter-2.1 - multiple-keyword text searcher, V2.1, {oss}

decus_grep - Public domain version of grep. {oss}

regexp3 - 2nd bug fix for regexp (volume 3) {oss}

gnu.regexp - GNU regular expression package for Java {LGPL}

grepmail - Searches a normal or gzipped mailbox for a given regularexpression {GPL}

Applications and Utilities

strchr (3) - locate character in string {oss}

index (3) - locate character in string {oss}

strrchr (3) - locate character in string {oss}

rindex (3) - locate character in string {oss}

strcmp (3) - compare strings {oss}

strcasecmp (3) - compare strings, ignoring case {oss}

strcoll (3) - compare strings according to current collation {oss}

strcspn (3) - span the complement of a string {oss}

strspn (3) - span a string {oss}

strtok (3) - string token operations {oss}

strpbrk (3) - locate multiple characters in string {oss}

strstr (3) - locate a substring in a string {oss}

bm_comp bm_exec bm_free (3) - Boyer-Moore string search {oss}

re_comp re_exec (3) - regular expression handler {oss}

regcomp regexec regerror regfree (3) - regular-expression library {oss}

regexp (3) - regular expression handlers {oss}

whichman - whichman, ftff and ftwhich are fault tolerant search utilities. Nice C module for Levenshtein Distance for approximate (typo tolerant) matching. whichman 'erep' finds grep and egrep, for example. {GPL}

p5-String-Similarity-0.02 - Perl module that calculates the similarity of two strings

gnu-regexp-1.0.8 - A regexp library for Java

p5-WWW-Search-Google-2.21 - Perl WWW::Search class for searching Google

pcre-3.7 - Perl Compatible Regular Expressions library

p5-URI-Find-0.11 - Perl module to find URIs in arbitrary text

pcre++-0.4 - A wrapper class around the pcre library

Match.H, Match.C, Match.Doc - J. Kercheval's PD regular expression comparator {oss}

Jgrep.C, Grep.C - Various flavors of grep utilities {oss}

regexp.pch - Bug-fix for regexp() library {oss}

regexp - almost-public-domain re-implementation of the V8 regexp(3) {oss}

rx - is a replacement for the GNU regex library. {GPL,GNU}

Sort::PolySort - Tokenizes and sorts a list of strings. You can specify how each string should be tokenized, and what the comparison function should be. [Perl] {oss}

Sort::Versions - Sorts version numbers, which isn't as easy as it sounds. Consider 1.1a [Perl] {oss}

String::Approx - Approximate ("fuzzy") matching for strings. You give it a string, it returns a list of all strings that are n insertions, deletions, or substitutions distant from your string. Fuzzy substitutions are also possible. [Perl] {oss}

Search::Text - A common search interface to a number of different text-based search engines. [Perl] {oss}

locus - personal fulltext database {Freeware}

Libraries and Functions

(The following links to subjects at this site retain your personalized selections.)

Directories and Catalogging - Library and CD catalogs, phone books, bibliographies, et al

Searching Algorithms - Algorithms for locating an item by searching.

Up to NUL Terminated String processing - NUL terminated string operations (strcpy, strlen, etc)

Up to Text Strings - Gateway topic to character and string processing routines. NUL Terminated String processing String conversions,et al. ascii to long, long to

freshmeat.net : Topic : Internet : WWW/HTTP : Indexing/Search