Regex101 is a tool that enables you to build, test, and debug regular expressions in many flavors, including PCRE2, PCRE, ECMAScript, Python, Golang, and Java. Select any flavor, type a regular expression, and provide an entry for matching, after which it will describe it in simple words and highlight all the matches. You can also experiment with other functions such as Substitution, Unit Tests, and List.
The best feature is that it offers a quick reference for all the given flavors so that you can easily clear confusion regarding any topic. Once your work has been completed, click on the Save button, and Regex101 will give you a shareable link to access it anytime and share with others. It also provides a delete link to remove the RegEx for those who don’t have an account.
Rubular is an online regular expression editor based on Ruby that allows you to write and check the output of Regular Expressions. It provides a String box where you can type the Regular expression and a Test box where the result of that expression is displayed. Share regular expressions with others by generating a permalink and sending it to them through any medium.
The platform offers an example to help newbies and experts understand the functionality so that they can better use it. Apart from this, it also shows a Regex quick reference at the end of the home page to help everyone easily find commonly used characters. The input box is compact in size, and you can also increase it by dragging it around the screen.
You can Roll Over a match or expression to check further details, validate patterns quickly via Tests, generate a shareable link to send to others, and Undo/Redo by pressing the appropriate keys. You can tweak various Flag settings like enable or disable global, case insensitive, multiline, single line, Unicode, and sticky. Lastly, you can view a comprehensive cheat sheet containing Character classes, Anchors, Escaped characters, Groups & Lookaround, and Quantifiers & Alternation.
#3 RegexPlanet Ruby
RegexPlanet offers a free-to-use Regular Expression Test Page to help you check RegEx in Ruby free-of-cost. It is extremely simple to learn and use for both beginners and experts. Enter any RegEx in the Regular expression box, enable/disable options, and add inputs. Click on the Test button, and it will generate the output along with the set of inputs. By default, it provides five inputs, but you can extend it to the desired number via the “More Inputs” button.
It offers several choices like ignoring whitespace, Case insensitive matching, and Newlines. Check or Uncheck any of them before hitting the Test button, and it will show the results based on the instructions. You can share Regular Expression with others by creating a shareable URL and forwarding it to the desired person on any platform.
#4 RegEx Marker
RegEx Marker is a tool for macOS that enables you to add the desired number of Xcode Source Editor Plugins through regular expressions. It offers a step-by-step approach to automate code editing. First, enter the regular expression to join with code for editing, and select an operator from add, replace, remove, and give the necessary instructions to Xcode. Lastly, insert the snippet code for the operator to utilize. You can also install this app on both Xcode 10 and 9. All-in-all it is a powerful tool for mac users and lets them easily test the output of their Regular Expressions.
#5 Ultrapico Expresso 3.1
Ultrapico Expresso 3.1 is a top-rated premium regular expression solution for .NET that can assist with both development and teaching. Developers and Web designers can use it to test the output of their Regular Expressions and polish their skills. It is free of cost, and you can start working by choosing components from the palette bar. The software can Test a given expression against sample or real data, show all pairs in a tree-like structure, create replacement strings & test the comparison and replace functionality instantly.
It highlights matched text with bold colors and automatically reveals any syntax errors. You can store frequently used regular expressions in a personal library and expand it as you keep progressing. The tool can generate code in C++, Visual Basic, and C#. Other features worth mentioning here include enabling/disabling tooltips, ability to manage long data files, a tutorial guide for new users, drag & drop text & files, export the results as XML or Excel, step-by-step validation testing, Undo/redo, Regex.Split() method testing, docking/undocking the builder, and many more.
Reggy is an open-source regular expression tool for OS X that allows you to test and view the output of regular expressions. With the help of this tool, you can check if an entered RegEx will match with a test string or not. It will also display any errors in the regular expression so that you can clear them. The goal behind Reggy is to help everyone use it without difficulties and check the output of their string directly from their Mac computer. Besides being available on GitHub, you can also get through Apple Downloads and MacUpdate.
#7 Regex Coach
Regex Coach is a graphical solution compatible with Microsoft Windows that makes it easy for you to test Regular Expressions in Perl. When you enter the regular expression, the tool runs an analysis and tells if it matches the target string. It will also inform parts of the target string matching with register groups. The application moves on a step-by-step basis and simulates split and s/// operators.
Everyone can easily understand the regular expression as the software translates the output into plain English. It displays a graphical representation of the parse tree and updates in real-time. This means that if you make a small or big change, it will appear in all areas of the application.
#8 Regex Widget
RegexMagic is a powerful regular expression generator that asks you to enter specifications and generates regular expressions based on those specifications. This functionality greatly reduces the workload and lets everyone get the desired RegEx in seconds. You first have to give it some sample data describing the text the regular expression should match. It will run an analysis to determine the pattern of the entered text. It supports various patterns like email addresses, numbers, and dates, giving you greater flexibility.
You can generate a regular expression that fully matches requirements by marking different portions of the samples. The regular expressions can be strict or loose, depending on the number of options selected. Its main highlight is the support for many popular regular expression flavors. Choose any flavor, and it delivers a regular expression that fits with it. It also supports a wide range of programming languages, so you can instantly generate a snippet in the desired language and directly paste it into the code.
RegexPixie is a powerful solution that provides developers with essential tools to craft and utilize regular expressions. It detects the pattern being typed and highlights the first 512 matches automatically. This is quite a helpful feature because beginners can learn what will break a regex. The highlighting is done in two colors to make it easy for you to check boundaries.
#11 Regex Regular Expression Tool
Regex Regular Expression Tool is an application that serves developers and those looking to practice and learn about regular expressions. It is available on the Microsoft Store for PC and Mobile devices. The tool is user-friendly and makes it easy for everyone to understand and use to the fullest. Type the Regular Expression, and provide a text for matching. The application will detect the characters as you type and give matches, if any, in the results box. It will show the total number of matches in digits for better clarification. After an output has been obtained, you can copy and paste it into the source code.
You can also check/uncheck various flag options like ignore case, global, and multiline. First-time users can try the tool by viewing any of the Top Regular Expressions given by the platform. You can also take a look at the comprehensive cheatsheet that provides the syntax for Character classes, Anchors, Quantifiers & Alternation, Escaped Characters, and Groups & Lookaround.
#13 I Hate RegEx
I Hate RegEx is an open-source cheat sheet that enables you to find commonly used regular expressions and read their descriptions for a better understanding. Its purpose is to help developers, web designers, or anyone who uses regular expressions in their projects to learn and get comfortable with the concept for proper implementation. Type a keyword in the search box like “username,” after which it will provide the corresponding regular expression, matches, and a description in Plain English to make it easy for everyone to get the idea.
You can enable or disable various flags in the regex box, including global match, ignore case, multiline, dotAll, Unicode, and sticky. If you’re a beginner and don’t know how to start, then choose one of the words given below the search box to see it in action. The platform provides a playground section where you can experiment with an unlimited number of regular expressions and view their matches.
PHPLiveRegEx is a Live Regular Expression Tester for PHP that enables you to enter and check the output of regular expressions. Input the expression, and it will update results in real-time, generating matches and search strings with each press of the button. You can indicate options and Replacement next to the main input box. Share the RegEx with others or post it on personal websites by generating a permalink and sending it to whomever you wish.
It provides some of the most commonly used characters in the cheatsheet right below the main page. Everyone can learn and increase their knowledge by visiting the Tutorials and Regex Database. This section of the platform lets you search for any topic related to RegEx and does its best to explain it in simple terms. You can view the frequently searched terms for various technologies and subjects like HTML, System Administration, Web Development, Dates and Times, and Backend Development.
#15 ExtendsClass CyrilEx Regex Tester
You can enable/disable several flags such as Unicode_Character_Class, Literal, Canon_EQ, Unix_Lines, Unicode_Case, Multiline, Dotall, Comments, global_search, and Case_Insensitive. ExtendsClass CyrilEx Regex Tester offers a Save & Share functionality which you can use to share the RegEx with others in the form of a link.
#16 FreeFormatter Regex Tester
FreeFormatter provides an online Regex Tester to help you write and debug regular expressions against any Test string. It is easy to use for everyone and doesn’t require any sort of training or past experience. Input the characters, provide Entries for testing, check/uncheck flags, and click on the “Test” button. The platform will output all the matches and will highlight them for proper understanding. You can also add Replacements for the RegEx. There is no save or share functionality, so it’s best to copy and paste the code into the clipboard for later reuse.
It provides detailed documentation containing many metacharacters to assist you with your work. More importantly, it offers solutions to some of the most common problems faced by developers in their everyday tasks. These answers are given below the home page and are written in simple English so that everyone can learn and apply the solution without difficulty.
Pythex is a regular expression editor exclusively for Python. It allows developers to enter any regular expression and match it with the desired Test String. It detects the characters being written and highlights once a match is found. It offers several flags like Verbose, Ignorecase, dotALL, and Multiline. Enable or disable any of these with a single click.
You can test and debug an infinite number of regular expressions and then copy and paste it into the code or share it with others by sending them its link. It is also one of the few platforms out there that offers a cheat sheet for quick reference. Pythex is written in Flask and JQuery and takes inspiration from Rubular, a regular expression tester for Ruby.
#18 Jex Regulex
You can also check/uncheck various flags, including GlobalMatch, IgnoreCase, and Multiline. It can be accessed via any modern web browser like Chrome, Firefox, Safari, Edge, and Opera. The best feature is that it can generate a code, which anyone can copy and embed on their website.
#19 Regex Workbench
Regex Workbench is an extension that you can install in your Visual Studio Code to build, test, and analyze an infinite number of regular expressions. Input a Regular Expression, provide Search Text, and it will output all the results. You also have to let it know what to do with the results by selecting from various options like Match, Match All, Split, Replace, and Replace All. Regex Workbench will follow the given instructions and generate the results, which can then be used in the source code.
It is an open-source tool and can be added to the editor by installing it from the Visual Studio Marketplace or getting it from within Visual Studio Code. The best feature is that it lets you insert a file from any folder in the Search Text box instead of writing everything manually.