Regex Hero vs RegexStudio

Regex Hero is a.NET regular expression tester for writing patterns and checking their behavior in.NET applications. The web tester runs in real time and highlights matches as users type. Its editor includes regex syntax highlighting and code completion, and the site provides a.NET regular expression reference. Users can generate C# and VB.NET code from patterns. A community library lists 179 regular expressions in categories such as email, validation, CSV, and password. Regex Hero is available on the web and Windows, and its tester page links to a Microsoft Store download. The home page says a Mac version is not yet available. The product is free: the Regex Hero Professional plan costs nothing, with no exact current plan limits stated. The news page announced that Professional became free in July 2017. BucketSoft, LLC is the maker; its about page says Steve Wortham founded the company in March 2009. Wortham provides support by email and through a forum for ideas and bug reports. The privacy policy says collected information may include names, email addresses, and browser information for analytics. It also says submitted ratings, reviews, and feedback may be displayed, reused, and distributed.

RegexStudio is a free, open-source web workbench for testing and debugging JavaScript and PCRE2 regular expressions. Native JavaScript and PCRE2 10.47 through WebAssembly are listed as execution engines. Live results show matches and capture groups, while a step-through debugger records execution details. Railroad diagrams can be edited, and views cover explanations, tests, replacements, code generation, and abstract syntax trees. Test cases can check match status, counts, text, ranges, captures, and replacement output. Learning materials include interactive tutorials, practice mode, challenges, a pattern library, and a quick reference. Tutorials cover fundamentals and practical patterns, while noting that syntax varies among regex languages. Generated snippets target JavaScript/TypeScript, Python, Java, Go, Rust, C# (.NET), PHP, Ruby, Swift, and Kotlin. The interface, tutorials, and challenges support English, Simplified Chinese, and Japanese. Share links encode expressions, flags, test text, and replacements. PCRE2 workers have a two-second budget; debugger recording allows 2,000 checkpoints and 50,000 capture slots.