Mastering Regular Expressions - Home page for the book Mastering Regular Expressions (O'Reilly 1997) by the book's author, Jeffrey Friedl. Includes an errata sheet. www.oreilly.com/catalog/regex
Posix Basic Regular Expression - A description of both basic Posix Regular Expression syntax, the programming interface and some advanced features that are provided in the implementation of POSIX.2 regular expressions in the GNU C Library. chaos4.phy.ohiou.edu/~thomas/ref/info/rx/Top.html
Regular Expression Features in Tcl 8.1 - A HowTo guide for the Regular Expression Features contained in Tcl 8.1. dev.scriptics.com/doc/howto/regexp81.html
Regular Expression HOWTO - Detailed HowTo documentation about regular expressions usage in combination with the Phyton programming/scripting language. py-howto.sourceforge.net/regex/regex.html
Regular Expressions - A brief and general introduction. ugrad-www.cs.colorado.edu/unix/regex.html
Regular expressions - An introduction from a University course. www.netaxs.com/people/nerp/automata/regexp0.html
Regular Expressions in ne (Nice Editor) - A description of the regular expression support in ne (Nice Editor). www.emerson.emory.edu/services/editors/ne/Regular_Expressions.html
Regular expressions in UNIX (Spring 1995) - Slightly inaccurate (mixes in glob patterns and calls them "shell regular expressions") but otherwise a good concise summary of plain vs extended regular expressions. www.uga.edu/~ucns/tti/Computer_Review/Spring95/Regular_expressions.html
Regular Expressions Reference - Downloadable reference with examples, by Miloslav Nic. www.zvon.org/other/reReference/Output
Regular Expressions Tutorial at Zvon - A tutorial with many examples which can be downloaded for off-line use. www.zvon.org/other/PerlTutorial/Books/Book1
The Regular Expression Rundown - A short description of Regular Expressions. hotwired.lycos.com/webmonkey/97/33/index3a.html?tw=programming
Unicode Regular Expression Guidelines - Unicode Technical Report #18: This document describes guidelines for how to adapt regular expression engines to use Unicode. www.unicode.org/unicode/reports/tr18
Using Regular Expressions - Good overview of regular expression operators, although some features described might not be available in your implementation. www.landings.com/_landings/pages/regex.html