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CLUSTER EXPRESSIONS-REGULAR-TERMINAL · 19 ENTRIES · EARLIEST ENTRY 2018-10-24

Regex testing and learning tools

This cluster consists of developer tools for writing, testing, debugging, learning, and generating regular expressions across web, terminal, and desktop environments. Dated entries begin in October 2018 and appear intermittently, with six of the nine dated entries concentrated between October 2025 and June 2026. The traction leaders by activity signal are regexplain, rexi, and txt2regex, each with zero stars.

Entry timeline

ENTRY TIMELINE

OCT 2018: 1JUN 2020: 1NOV 2023: 1FEB 2024: 1OCT 2025: 1NOV 2025: 1FEB 2026: 1MAR 2026: 1JUN 2026: 2AUG 2026: 3SEP 2026: 4OCT 2026: 2
OCT 2018OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 1 ai-built · 3 hand-coded · 15 unlabelled

Operator · 2 hobby · 8 open source · 9 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 19 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01regexbench0★1 day—hobbyLocal web app for testing JavaScript regular expressions against sample text, inspecting matches and capture groups, and previewing replacements.
  2. 02Tools0★10 dayslivehobbyWeb dashboard of small developer tools, starting with a regex tester, that runs entirely in the browser without sending data.
  3. 03rexi0★3 moliveopen sourceTerminal interface for interactively testing regular expressions.
  4. 04txt2regex0★4 moliveopen sourceTerminal tool that guides users through interactively building and testing regular expressions via a step-by-step wizard interface.
  5. 05regex-tui0★7 mostaleliveopen sourceA TUI that provides interactive visualization and explanation of regular expressions, functioning like a command-line regex101 tool.
  6. 06Regex Tester0★5 yrabandonedlivehand-codedopen sourceDesktop application that tests regular expressions against sample text and highlights all matching results.
  7. 07rgx-cli0★1 moliveopen sourceTerminal regex tester with real-time matching and multi-engine support.
  8. 08regexplain0★3 moliveopen sourceA terminal UI that explains and visualizes regular expressions, offering a regex101-like experience in the terminal.
  9. 09Wildcard0★6 mostalelivehand-codedopen sourceDesktop application that provides an intuitive interface for testing and practicing regular expressions with instant feedback.
  10. 10Upyng Go - DevTools & More0★11 mostaleliveOffers an offline suite of developer tools for regex testing, formatting, QR generation, and cron scheduling.
  11. 11crex0★4 yrabandonedlivehand-codedopen sourceTerminal utility to explore, test, and check regular expressions.
  12. 12mvp-regexgen-ai0★7 mostaleliveai-builtWeb tool that generates regular expressions from plain-English descriptions and tests them live against sample data.
  13. 13Magic String playground0★unknownliveA web playground for experimenting with string manipulation operations and previewing the resulting output in real time.
  14. 14Eazy Regex - English words to regular expression0★unknownliveWeb app that converts plain-English descriptions into regular expressions using AI.
  15. 15Regexr0★unknownliveBrowser-based tool that lets users write, test, and debug regular expressions with real-time match highlighting and inline syntax explanations.
  16. 16Input validation0★unknownliveWeb tool for validating and processing user input steps.
  17. 17正则大全0★unknownliveWeb app that offers a collection of common regular expressions for validation and matching tasks.
  18. 18SEO Regex Builder0★unknownliveWeb app that generates regex patterns for SEO filtering tasks.
  19. 19Regex Learn - Step by step, from zero to advanced.0★unknownliveInteractive web app that teaches regular expressions through step by step lessons, practice exercises, and shareable tests.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.