DevToys.app – An offline Swiss Army knife for developers
DevToys is a cross-platform Swiss Army knife for developers. 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.
DevToys.app – An offline Swiss Army knife for developers launched on January 19, 2022 with 27 votes, #945 of 2,891 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 4 years on.
In plain words
DevToys.app is an offline utility application designed for developers, offering a collection of tools for common development tasks. Launched in 2022, it functions as a versatile toolkit accessible without requiring an internet connection. The application serves software developers who need quick access to various utilities for their work, with the key advantage being its offline functionality that ensures tools remain available regardless of network connectivity.
written from the facts on this page · September 2026
From the sources
DevToys is free , open source and is privacy-focused on Windows , macOS and Linux ! No need to use many untruthful websites to do simple tasks with your data. DevToys is extensible . More tools are available through the DevToys community, and you can build your own ! DevToys can automatically detect the best tool that fits the clipboard content. A lightbulb icon indicates the tool(s) that can be used with the clipboard content. If only one tool is detected, the clipboard content will be automatically pasted in that tool*. *Smart detection behavior can be customized in the app settings. DevToys is made with and designed to embrace its operating system. Made with by Etienne Baudoux and…from devtoys.app
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This is a project I've been working on since the start of Covid-19. I built an app so that I don't have to put data into online tools like JWT debugger, JSON formatter, URL decoder, etc... https://devutils.app The app works entirely offline and is open-source. I'm selling the pre-built version of the app to earn some revenue for my time. If you want to try the app but can't afford the price or don't have XCode to build the app, drop me an email (my profile), I'll be happy to provide you a free build. I would love to hear all the feedback/suggestions. Thanks!
DevToysJul 2026 · devtoys-nu.vercel.app · ▲640 essential developer tools in one clean, ad-free bookmark.
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