RegexPilot vs SK Play Labs Regex Tester

RegexPilot is a Mac-native visual regular-expression builder with AI for composing, inspecting and testing patterns. Users assemble expressions from categorized drag-and-drop blocks, inspect them in a panel and follow a plain-English breakdown tree linked to the pattern. Sample text shows highlighted matches and capture groups, and replacements can be assembled from blocks. The product supports 21 regex flavors and routes patterns to the corresponding language engines. Users can provide API keys for listed AI providers or run AI offline with LM Studio, Ollama, llama.cpp or LocalAI. Its library includes 50 curated patterns and supports folders, tags and JSON import/export. A VS Code extension synchronizes changes between the app and regex literals in the editor. Users can export code for 21 languages, create SVG or PNG railroad diagrams and make browser-openable share links. The desktop app says it sends no usage statistics, telemetry or analytics to a server on its own; patterns and settings remain on-device unless a share link is created. It requires macOS 14 or newer. The free plan covers JavaScript and TypeScript engines; the one-time license costs 19.00 EUR.

SK Play Labs Regex Tester is a free web tool for testing and learning regular expressions. Entered patterns are matched against sample text, with matches highlighted and capture groups listed as the pattern runs. The tool explains metacharacters, quantifiers, groups, and character classes in plain English, token by token, and includes a cheat sheet with symbol meanings and examples. Patterns execute in the browser through JavaScript’s built-in regular-expression engine. The global flag is always enabled; ignore-case, multiline, and dotall can be toggled. Because JavaScript, PCRE, Python, and Go differ in some behavior, the maker advises checking patterns in their target language. Explanations are intended for learning and may describe highly unusual constructs generically. The maker says text stays in the browser and is not uploaded. No account is required, and the site says everything is free. SK Play Labs is based in Bengaluru, India.