DevToo.dev
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Text-Utils JSON Formatter
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CodifyFormatter.org
DevTool.io
DevToys
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AppErgo
10015.io
FreeToolkit
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ToolMasterApp.in
ToolsOnline.run
Cryptii
DevToo is a free collection of 67 browser-based developer tools for everyday engineering tasks โ no ads, no sign-up, and no uploads. It brings together utilities across data, encoding and security, code, networking, and DevOps, including a JSON formatter and validator, JWT decoder, regex tester, Base64 encoder/decoder, hash generator, and timestamp converter, all in one fast, privacy-friendly workspace. Every tool runs locally in your browser, so your data never leaves your machine and no account is required. DevToo is built for developers who want a single reliable place for quick formatting, conversion, encoding, and debugging instead of juggling scattered, ad-heavy single-purpose sites.
AppErgo is an independent project covering text, codes and puzzles, conversion, dates and time, audio, games, random generators and everyday utilities. Each tool is designed for quick use on desktop and mobile, with a clear interface and a responsive layout.
Available in English and French, AppErgo is built primarily with static HTML, CSS and vanilla JavaScript. Its name combines App with Ergo, reflecting a focus on practical applications, ergonomics and ease of use.
DevToo.dev AppErgoAppErgo's answer:
AppErgo brings together more than 200 browser tools in one fast, lightweight and privacy-friendly toolbox. Every tool is 100% free, works without an account, runs directly in the browser, avoids intrusive advertising, and is fully responsive on both desktop and mobile.
AppErgo's answer:
AppErgo was created in France in 2026 as an independent project developed by a solo creator. Its name combines โAppโ, for applications and online tools, with โErgoโ, reflecting a focus on ergonomics, simplicity and ease of use. The project started with a small collection of practical tools and gradually grew into a toolbox of more than 200 tools covering text, codes and puzzles, dates, audio, games and everyday tasks.
AppErgo's answer:
AppErgo is primarily built with static HTML, CSS and vanilla JavaScript. Its pages are generated through a custom administration system based on PHP and MySQL, while the public tools rely on standard browser technologies such as SVG, Canvas and the Web Audio API. All processing takes place directly in the browser, without external APIs or remote processing services.
AppErgo's answer:
AppErgo is designed for students, teachers, developers, creators, office workers, puzzle enthusiasts and everyday users who need a practical online tool without creating an account or navigating a complicated service. Its wide range of tools supports both occasional tasks and regular use on desktop or mobile.
AppErgo's answer:
AppErgo is built for people who want to open a tool, complete a task and move on. It combines more than 200 fast, lightweight and responsive tools with clear interfaces and local browser processing. There is no signup, no intrusive advertising and no unnecessary upload of personal data. The tools are available directly on desktop and mobile, without installing anything.
AppErgo's answer:
AppErgo is primarily designed for individual users rather than named enterprise customers. Its audience includes students, teachers, developers, creators, puzzle enthusiasts and anyone looking for a quick browser-based tool.
CodeUtil.dev - Fast, private developer tools in your browser. JSON formatter, Regex tester, Cron generator, and 17 more.
10015.io - 10015.io is an all-in-one toolbox offering many tools from various categories.
Text-Utils JSON Formatter - The JSON Formatter can be used to convert JSON to one line or format it using a specified level of indentation.
FreeToolkit - 100+ free online tools: JSON formatter, Base64 encoder, UUID generator, regex tester, age calculator, color picker, unit converter & more. Fast, private โ runs entirely in your browser. No login.
150+ Developer Tools - Here are some of the amazing tools/resources that will make your life a lot more easier save many hours of research!Perks:-โญ Save 100+ hoursโญ Detailed description of every tool + Linkโญ Life-Time AccessEnjoy exploring these tools/resources!
FreeToolPoint - 45+ free browser-based tools: PDF tools, resume builder, OCR, YouTube thumbnails, favicon generator, calculators & more. No signup, no uploads.