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RegExr
Expresso
RegEx Generator
RegexPlanet Ruby
The Regex Coach
Reggy
regular expressions 101
CodeAva
IT Tools
CyberChef
Epoch Converter
UUID GUID GENERATOR
Case Convert Tool
CodersTool
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CodeAva (codeava.com) is a high-performance developer utility hub and Automated Validation Assistant (AVA). Designed for modern software engineers and tech-savvy startups, CodeAva provides a suite of essential, browser-based tools including a high-precision Unix Timestamp Converter, multi-format UUID/ULID/NanoID generators, and cryptographically secure passphrase generators.
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rubular
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CodeAva is built primarily with Next.js, React, TypeScript, Tailwind CSS, and modern browser APIs, with a strong focus on fast front-end performance, clean UI, and browser-based developer tooling.
CodeAva's answer:
CodeAva acts as an Automated Validation Assistant (AVA) for developers. CodeAva combines website audits, code audits, and practical developer tools in one clean workflow. Instead of offering a single utility, it helps developers and technical teams validate what they are about to ship โ from technical SEO and response headers to code quality, timestamps, IDs, JWTs, and debugging helpers. It is built to be fast, browser-friendly, and genuinely useful in real development and QA workflows.
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CodeAva is designed for practical validation, not just isolated utilities. It gives users a mix of audits, developer tools, examples, and technical guides that help catch issues earlier and act on them faster. The product focuses on clarity, useful outputs, and developer-first workflows, with many core tools available without signup.
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CodeAva's answer:
CodeAva is built for software developers, QA-minded teams, technical founders, agencies, and site owners who want to catch code, performance, SEO, and validation issues before they reach production.
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CodeAva stands for Automated Validation Assistant. It was created around a simple frustration: too many quality checks happen too late, across too many disconnected tools. The goal is to make validation faster, clearer, and more useful for teams that ship real code, real websites, and real products.
Based on our record, rubular seems to be more popular. It has been mentiond 36 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I read a lot on https://www.regular-expressions.info and experimented on https://rubular.com since I was also learning Ruby at the time. https://regexr.com is another good tool that breaks down your regex and matches. One of the things I remember being difficult at the beginning was the subtle differences between implementations, like `^` meaning "beginning of line" in Ruby (and others) but meaning "beginning of... - Source: Hacker News / about 2 years ago
As a ruby developer, I was happy to find that VS Code / TextMate grammar files use the same regular expression engine called Oniguruma as ruby itself. Thus, I could be sure that when trying my regular expressions in my favorite online regex tool, rubular.com, there would be no inconsistencies due to the engine inner workings. - Source: dev.to / almost 3 years ago
In my testing on a couple of regex testers (https://rubular.com/ & https://regex101.com/) this seems to select the postcode correctly each time. Source: about 3 years ago
Copied from Rubular ( a nice tool to test regexes ):. Source: over 3 years ago
To add on to this from a regex perspective - I find regex to be invaluable in my workflows. Once you learn the basics I always test and debug my strings using https://rubular.com because it has string hints at the bottom that are readily available. Source: over 3 years ago
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
IT Tools - IT Tools is a free and open-source collection of handy online tools for developers & people working in IT.
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.
CyberChef - The Cyber Swiss Army Knife
RegEx Generator - RegEx Generator is a simple-to-use application that comes with the brilliance of intuitive regex and is also helping you out to test the regex.
Epoch Converter - Epoch & Unix Timestamp Conversion Tools