RegEx - Learning

What it does

Unlock the full power of Regular Expressions with an interactive learning experience designed for all skill levels. Whether you're a beginner exploring basic patterns or an expert mastering advanced techniques, this app offers structured lessons, interactive exercises, and real-world challenges to build your regex skills. Now available on the web!

Unlock the full power of Regular Expressions with an interactive learning experience designed for all skill levels. Whether you

• 
  RegexLearn2021 · regexlearn.com · ▲336

  Learn RegEx step by step, from zero to advanced

• 
  Learn Regular Expressions with simple, interactive exercises2020 · regexone.com · ▲144

  RegexOne provides a set of interactive lessons and exercises to help you learn regular expressions

• 
  Improve your Python regex skills with 75 interactive exercises2021 · github.com · ▲175

  Learn Python Regular Expressions step by step from beginner to advanced levels - py_regular_expressions/interactive_exercises at master · learnbyexample/py_regular_expressions

• 
  Regex Cheatsheet2020 · ihateregex.io · ▲499

  A modern regular expression playground with live matching, visual railroad diagrams, rich notes, and easy sharing.

• 
  RegExr 2.02014 · regexr.com · ▲101

  Online tool to learn, build, & test Regular Expressions

• RF
  RegEx for Regular Folk – A visual, example-based introduction2020 · refrf.shreyasminocha.me · ▲502

• 
  Kilo Code for iOS and Android▲498

  Start coding agents, control sessions, review PRs. Anywhere.

  Dev tools · 22d ago · kilo.ai

• 
  Monospace from Directus▲453

  The governed API layer for every app, person, and agent

  Dev tools · 17d ago · monospace.io

• 
  Arcjet▲430

  Secure the AI agents you're building at runtime

  Dev tools · 18d ago · arcjet.com

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 8d ago · github.com

• 
  Open-Source eInk Bike Computer▲421

  OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.

  Dev tools · 28d ago · opentrailpaper.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 6d ago · github.com

• IN
  isometric.nyc – giant isometric pixel art map of NYC▲1,325

  Hey HN! I wanted to share something I built over the last few weeks: isometric.nyc is a massive isometric pixel art map of NYC, built with nano banana and coding agents. I didn't write a single line of code. Of course no-code doesn't mean no-engineering. This project took a lot more manual labor than I'd hoped! I wrote a deep dive on the workflow and some thoughts about the future of AI coding and creativity: http://cannoneyed.com/projects/isometric-nyc

  AI · Jan 2026 · cannoneyed.com

• 
  Cowork▲1,088

  Turn Claude into your digital coworker

  AI · Jan 2026 · claude.com

• 
  DataFast▲867

  Revenue-first analytics

  Growth · Jan 2026 · datafa.st

• 
  OpenClaw▲836

  The AI that actually does things

  AI · Jan 2026 · openclaw.ai

• 
  Kilo Code Reviewer▲799

  Automatic AI-powered code reviews the moment you open a PR

  Dev tools · Jan 2026 · kilo.ai

• 
  PostSyncer▲793

  AI Content Maker, for Social Media Publishing

  AI · Jan 2026 · postsyncer.com