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regular expressions 101 VS RegExr

Compare regular expressions 101 VS RegExr and see what are their differences

Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript. is an online tool to learn, build, and test Regular Expressions.
regular expressions 101 Landing Page
regular expressions 101 Landing Page
RegExr Landing Page
RegExr Landing Page

regular expressions 101 details

Regular Expressions Programming Tools Productivity

RegExr details

Programming Tools Regular Expressions Productivity

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Social recommendations and mentions

We have tracked the following product recommendations or mentions on Reddit and HackerNews. They can help you identify which product is more popular and what people think of it.

regular expressions 101 mentions

  • Please help: Regex code to fix iPhone issue with text fields
    Hi, when you use the square brackets, you're only matching a single character from the options you provide within it. In the above case, you are requesting a string that only consists of an uppercase or lowercase character and nothing else. Have a go at to help you figure out which combination you will need. Consider what characters need to repeat, what different sorts of characters could... - Source: Reddit / about 2 months ago
  • Do you use regular expressions with PowerShell?
    Here ya go man: this will take your troubles away. - Source: Reddit / about 2 months ago
  • Don't you just hate it when that happens?
    Https:// is very helpful although most people will already know it. - Source: Reddit / about 2 months ago
  • What each part in this javascript regex “/^\s*[\r\n]/gm” means?
    There are a lot of great online regex tools out there. Try this one: - Source: Reddit / about 2 months ago
  • Help with table only showing 1 row (screenshots of config)
    Admittedly I'm no regex guru but there's sites that can help you build them like - hopefully that'll get you going :). - Source: Reddit / about 2 months ago

RegExr mentions

  • Good, free tutorials to learn regex?
    Personally, I use regexr. It can build a regex for you, but also explains what each step does. - Source: Reddit / about 1 month ago
  • Best Websites Every Programmer Should Visit
    Regexr : Another online tool to learn, build & test Regular Expressions. - Source: / about 1 month ago
  • Windows 10 Blocking List
    You should check regular expressions ;> see how much this slims your list :. - Source: Reddit / about 1 month ago
  • Would it be possible to write a regular expression that converts from Arabizi to Arabic ?
    However, if you'd like to practice regex, check out and write some expressions that match stuff in the example text. - Source: Reddit / about 1 month ago
  • Regex: From beginner to BEST on your team in one blog 👑
    This regex, first of all, looks for a number which is our first group, then a . (notice we had to escape the . Else it would match on any character as shown previously). The second group (.+) is looking for any character except line breaks 1 or more. Using the replace tools on you can easily reference your groups. To reference the first group type in $1: And then to reference the second... - Source: / about 1 month ago

What are some alternatives?

When comparing regular expressions 101 and RegExr, you can also consider the following products

Expresso - The award-winning Expresso editor is equally suitable as a teaching tool for the beginning user of regular expressions or as a full-featured development environment for the experienced programmer with an extensive knowledge of regular expressions.

RegexBuddy - RegexBuddy is your perfect companion for working with regular expressions.

Regex Hero - Online Silverlight regular expression tester with instantaneous highlighting, C# and VB.NET code generation, code completion, regex analysis, benchmarking, and more.

Debuggex - Debuggex is an intuitive visual regular expression debugger, tester, and helper.

Regulex - Open-source, regular expression parser and visualizer.

RegexMagic - Use RegexMagic to generate complete regular expressions to your specifications by using RegexMagic's flexible patterns, instead of the cryptic regex syntax.

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