Regexr.com
RegExr: Learn, Build, & Test RegEx
RegExr lets you build, test, and learn regular expressions with real-time feedback, syntax highlighting, and helpful community patterns.
Test and learn regex with instant feedback
RegExr is an interactive tool designed to help you learn, build, and test regular expressions right in your browser. Whether you're a beginner or an experienced developer, you can experiment with regex patterns, see instant results, and get clear explanations for each part of your expression.
The site offers syntax highlighting, contextual help, and a built-in cheat sheet to make working with regex less intimidating. You can browse and use community-created patterns, making it easy to find solutions for common tasks. It's great for anyone who wants to improve their regex skills or quickly troubleshoot expressions for projects using PHP, JavaScript, or PCRE.
With RegExr, you can save your work, share patterns with others, and explore a searchable library of examples. It's a handy resource for learning, testing, and mastering regular expressions in a supportive, user-friendly environment.
Alternatives to Regexr.com
Discover websites similar to Regexr.com based on shared categories, topics, and features.
Alternatives with .com Domain Extension
Build, test, and debug regular expressions online with instant feedback, syntax highlighting, and helpful explanations for multiple programming languages.
Learn web development with step-by-step tutorials on PHP, CodeIgniter, Laravel, Node.js, MySQL, and more, perfect for beginners and developers alike.
Google Codelabs offers step-by-step coding tutorials to help you build apps and learn new technologies with hands-on, guided lessons.
Go by Example is a site with practical, easy-to-follow Go programming language examples and explanations to help you learn coding step by step.
Try Docker in your browser with an interactive playground that lets you experiment, learn, and practice using Docker—no installation needed.
CodeProject is a community site for developers to share articles, tutorials, and code samples on programming topics like C#, Python, AI, and more.
Ozobot offers fun coding robots and STEAM learning tools for classrooms and at home, helping kids learn programming and robotics through hands-on play.
Discover programming tips, tools, and projects shared by a global community of developers. Learn, share, and grow your coding skills together.
Step-by-step guides for using Git and GitHub with R, RStudio, and R Markdown, making version control simple for R users at any experience level.
Get web development tips, tutorials, and resources on HTML, CSS, JavaScript, WordPress, and more, designed for learners and developers of all levels.
A Russian-language site about programming, mobile apps, and creative coding, offering articles, forums, code examples, and Q&A for developers.
EduSense helps children learn programming in a fun and creative way, boosting their analytical thinking and problem-solving skills. (Polish language)
Explore guides, how-tos, and best practices for learning jQuery and building interactive websites with this helpful online learning center.
Learn HTML, CSS, and JavaScript with easy tutorials, references, and examples for building and understanding web pages. Ideal for beginners and coders.
Explore friendly web development tutorials focused on React, CSS, JavaScript, and animation, designed to make complex topics easy to understand.
Better Web Type offers a free online course and resources to help web designers and developers master web typography and improve their design skills.
Explore enhanced eBooks with narration, interactive exercises, and live code execution on liveBook—ideal for learning programming and tech topics.
Explore coding and STEM lessons, educator resources, and app access for Sphero robots and kits. Start learning and teaching robotics easily online.
Delightex lets kids invent, build, and code their own 3D projects on any device, making STEAM learning fun and interactive for classrooms and home use.
Find easy-to-follow tutorials on Linux, server administration, Python programming, and web development to help you learn new tech skills.
More Regexr.com Alternatives
Learn how to create short, self-contained code examples to get better programming help and debug issues more easily. Great for coders seeking support.
Run code instantly in dozens of programming languages online. Test, share, and experiment with code right in your browser—no installation needed.
NLTK is a Python toolkit for working with human language data, offering tools and resources for text processing, analysis, and natural language tasks.
A personal blog sharing technical discussions, solutions, and examples about JSON, XPath, JavaScript, and programming concepts for developers.
Explore the OGRE Wiki, an archive of community-driven tutorials, code snippets, and resources for learning and using the OGRE3D graphics engine.
Learn robotics by practicing with simulated and real robots. Access courses, masterclasses, and live training to grow your robotics skills and career.
Learn WordPress offers free lessons, courses, and resources for all skill levels to help you grow your WordPress knowledge and connect with the community.
Processing.org offers a free, open-source platform and language for learning, coding, and creating visual art, with tutorials, examples, and a creative community.
Explore Scala, a powerful programming language. Access documentation, guides, community forums, and tools to learn, code, and build projects with Scala.
Official website for the Dart programming language, offering documentation, guides, tools, and resources to help you build apps for web, mobile, and more.
Discover Zig, a modern programming language with clear docs, learning guides, and an active community for building reliable, reusable software.
Learn how to build and deploy web apps with Ruby on Rails through hands-on tutorials, updated for Rails 7. Free sample chapters and full courses available.
Learn fundamental algorithms and data structures through lectures, code, and resources based on the renowned Algorithms, 4th Edition textbook.
Create and test code for the BBC micro:bit using an easy blocks or JavaScript editor—perfect for learning programming and electronics online.
Discover OCaml, a functional programming language site with guides, docs, tools, and a community to help you learn, code, and get started easily.
Discover, download, and share PHP classes and scripts. Find tutorials, code examples, and connect with PHP developers to improve your coding skills.
Browse a massive collection of "Hello World" programs in hundreds of programming languages, perfect for learning syntax or exploring coding diversity.
Explore programming tutorials, coding projects, and insights on JavaScript and more, shared by Eli Bendersky in an easy-to-read blog format.
German-language site offering programming examples, science articles, and fun math topics for exploring math, physics, and computer science.
Explore LoRa and LoRaWAN with guides, coding tutorials, and DIY projects focused on radio mapping and community IoT solutions in Australia.