RegExr and Rexv are both cool web applications for developpers who often work on regular expressions (also called regex…)

Two very good tools for developers who often work on regular expressions, Rexv and RegExr: Rexv is relatively known by developpers and is entirely written in javascript, which allows real-time evaluating and testing even if regex type is pcre or posix … and the newcomer: RegExr, which pushes the concept further by aiming a more social usage. Indeed, RegExr,  which is written entirely in flash (even in Flex) gives you the ability to share your regular expressions via the “community” tab with other developers to finaly make the task of writing a little less laborious. An Adobe Air port is also available for offline usage. Many current regular expressions are pre-saved, such as a search url regex, email … or Canadian zip codes.

RegExr : http://www.gskinner.com/RegExr/
Rexv : http://www.rexv.org