errno.help is described as 'Free, text-first collection of IT and developer reference tools: a CIDR/IPv4 calculator, JWT decoder, hash generator (SHA-256/1/MD5), UUID and password generator, YAML/JSON converter, cron parser, DNS/WHOIS/ASN/GeoIP lookups, a Windows error code and event ID' and is an website in the development category. There are six alternatives to errno.help, not only websites but also apps for a variety of platforms, including Self-Hosted, Mac, Windows and Linux apps. The best errno.help alternative is DevToys, which is both free and Open Source. Other great sites and apps similar to errno.help are CyberChef, Omni Tools, DevKnife and onlinetoolhub.dev.
DevToys is a Swiss Army knife for developers for Windows & Apple macOS. DevToys helps in daily tasks like formatting JSON, comparing text, testing RegExp. No need to use many untruthful websites to do simple tasks with your data.
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CyberChef is a simple, intuitive web app for carrying out all manner of "cyber" operations within a web browser. Runs client-side in your browser via the website or as a downloadable html file.
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Welcome to OmniTools, a self-hosted platform offering a variety of online tools to simplify everyday tasks. Whether you are manipulating images, crunching numbers, or coding, OmniTools has you covered. Please don't forget to star the repo to support us.
DevKnife is a native macOS app packed with everyday tools for developers. Format and edit JSON, decode JWTs, generate test data, pick colors, scan ports, compare text, and more. All in one clean interface designed to speed up your workflow.
Free and privacy-first online tools for developers, students, and creators — including IP lookup, Base64 decoder, JSON formatter, crontab generator and more.
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