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Regex lessons beside a cheatsheet and playground

A lightweight programmer's editor for website files, scripts, and source code.

Edit plain-text and source files on macOS with syntax highlighting, encoding tools, scripting, and regex search.

AI tools that turn plain English into spreadsheet formulas, scripts, and data analysis.

Replace text in files or streams with a compact, readable command-line syntax.

Embed Perl-compatible regular-expression matching in applications through a portable C library.

A terminal code editor built around selecting text first and applying editing commands to it.

Auto-redact PII in PDFs and screenshots on Mac, fully offline

Inspect regular expressions visually

Display and export a regex diagram

A code and text editor with configurable search across the current file and other open documents.

Search documents and replace text files

Search source trees recursively for regular expressions while respecting ignore rules by default.

Search text interactively with reusable patterns

Hybrid retrieval engine with vector search and managed inference in one API.

Edit source files with a lightweight cross-platform editor and optional Python add-ons.

Reuse regex searches across Windows folders

Web search with a documented no-search-history policy

A self-managed engine for full-text search, indexing, and analytics.

Test matching, substitution and extraction rules

Compare lists and clean ordered text

AI search and retrieval platform for agentic, generative and search experiences

Independent-index search with configurable location and metrics controls

Read Google's search performance, indexing and crawl information for your site.