RegexPilot overview

RegexPilot bundles the actual interpreters as sidecars:

Python → real CPython
Ruby → MRI/Onigmo
Java → GraalVM-compiled OpenJDK
C# → .NET 9
PHP → native PCRE
Plus bundled Perl (microperl 5.36.3) and a few more (see website)

Each flavor runs against its real engine in 1–3ms.

Other Things Worth Knowing

Visual builder — drag pieces onto a railroad diagram, click any piece to edit. I'm a visual person myself I grasp things better when I see a rich visual representation rather than text that looks like a password.
Live testing panel with capture-group inspection + replace mode
AST-based editor (your edits mutate the tree, source regex regenerates)
Optional AI assist — bring your own key (OpenAI / Anthropic / Gemini / etc.) or run locally via Ollama / LM Studio. Pro tier includes a bundled subscription if you don't want to wire up your own.
Voice dictation runs on-device (Whisper Tiny bundled). Audio never leaves your Mac.
No analytics, no tracking, no signup. The only network call is license validation against Lemon Squeezy if you activate Pro — offline keys available on request.

Free to download — fully functional for 30 days, then reverts to JavaScript/TypeScript-only (the most common case). Existing library entries for non-JS flavors stay visible but become read-only after trial. Nothing breaks. Fully functional besides the sidecar engines and AI

https://regexpilot.com