multi-line mode, commonly implemented as /m). Free-spacing (aka extended or free-spacing and comments mode, commonly implemented as /x). In cases where the selected flavor does not support one or more of the above modifiers, the option is disabled. Versions RegexBuddy 1.0 — Released May 3, 2004 — Initial version based on the PCRE library RegexBuddy 2.0 — Released January 25, 2005 — Added the regular expression debugger, grep functionality, and the new JGsoft regular expression engine RegexBuddy 3.0 — Released June 13, 2007 — Introduced multi-flavor support (with 12 flavors; expanded in later releases) and the integrated forum RegexBuddy 4.0 — Released September 16, 2013 — Introduced multi-application support (with 126 predefined applications, aware of 574 aspects of 94 distinct regular expression flavors, and aware of 96 aspects of 30 replacement flavors) References External links Official RegexBuddy website Regular-Expressions.info — Regular expression tutorial and reference built from the RegexBuddy help files Regular expression flavor comparison — Although not officially stated, this list shows flavor-specific syntax and behavior supported by RegexBuddy Listing of alternative regular expression tester software Proprietary software Pattern matching