Tool for creating, testing, and learning about Regular Expressions
RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp). RegExr was created by gskinner.com, and is proudly hosted by Media Temple. Edit the Expression & Text to see matches. Roll over matches or the expression for details. PCRE & JavaScript flavors of RegEx are supported. Validate your expression with Tests mode. The side bar includes a Cheatsheet, full Reference, and Help.
Xidel is a cli webpage scraping tool supporting XPath/XQuery 3 and CSS
...The extracted values can then be exported as plain text/XML/JSON, or assigned to variables to use in other extract expressions.
It also provides an online CGI service for testing of XPath / XQuery 3.0 expression.
(Xidel is a part of the VideLibri project, so its project page just redirects there )