Dev tools · alternatives · 2026
24 alternatives to Client-side ads-free dev utils (diffs, time conversion, JSON formatter)
utils.foo a fully client side, ads-free developer utils app. Today, it has a timestamp converter, base64/url encoder/decoder, json & diff utils, quick pivoting data. A lot of these exist, but often buried with ads or unclear data usage. I wanted to build something for myself that is ads-free and easy to use. My goal is get to top 20 commonly used tools, make them feature-rich and then reduce the page size. Will appreciate feature/tools requests and feedback at https://github.com/midplane/forum.utils.foo/issues.
utils.foo is a client-side, ad-free collection of developer utilities including a timestamp converter, base64 and URL encoder/decoder, JSON formatter, and diff tool. It runs entirely in the browser with no data… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Client-side ads-free dev utils (diffs, time conversion, JSON formatter) launched in 2024; newer entries below may have overtaken it.
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One box for every dev utility — runs in your browser
Jul 2026 · dev101.io · its alternatives →
- 3OS
Hey HN, wanted to share a new collection of dev utilities that are ad-free, client-side (nothing leaves your device), with a command+k menu for fast search. github.com/jamdotdev/jam-dev-utilities Why? The sites we use every day for data conversion (e.g. PNG to data URI) are cluttered with ads, one of those mildly annoying things engineers deal with while writing code. This came up at a recent team dinner, and we got interested in creating nicer, modern, uncluttered versions of these tools. Since then, every time we needed a util, we added it to our stack. Lots more tools still to…
2024 · its alternatives →
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Hi HN, Simple online tools on the web have become unnecessary greedy. For example, * https://jsonformatter.org/ displays 7 ads on page load * https://convertcase.net/ had 4 ads plus a Google Vignette. And many more sites do the same thing. It's just noisy, which is why I created this VS Code Extension where you don't need to even leave your editor for your small web operations. I also built a Desktop app and an online version, which can be reached or downloaded at smallonlinetools.net. Both of which will be ad-free forever. So far smallonlinetools.net has over…
2024 · marketplace.visualstudio.com · its alternatives →
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17 dev tools, one URL, all client-side
Jul 2026 · usedevdash.dev · its alternatives →
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JSONSift▲10Free developer tools that run entirely in your browser
Jun 2026 · jsonsift.com · its alternatives →
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DevTools▲18Collection of free online tools to help in web development
2025 · onlinewebdevtools.com · its alternatives →
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30+ dev tools in one place fast, free, and 100% client-side.
May 2026 · rawtools.site · its alternatives →
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QuickDev▲219 free developer tools — all client-side, no tracking
Jun 2026 · quickdev.cc · its alternatives →
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40+ dev tools that run 100% in your browser - no servers
2025 · nicheutils.com · its alternatives →
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free developer tools that work offline, in your browser
Aug 2026 · toolsfordev.tools · its alternatives →
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Tooly▲5I kept opening online JSON formatters and getting buried in ads and popups. So I made a clean version with a few tools I actually use daily – JSON formatter with syntax highlighting, Base64 encoder/decoder, JWT decoder, text diff, and timestamp converter. Everything runs client-side. No tracking, no server calls, no signup walls. Built with React 19 and TypeScript. It's open source: https://github.com/chken007/tooly My 5-year-old helped name it. She insisted on "Tooly" and I couldn't argue with that logic. Open to feedback – especially if you spot bugs or have…
Dec 2025 · tooly.one · its alternatives →
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150+ Free Developer Tools in One Place
Feb 2026 · devtoolbox.yashnandvana.in · its alternatives →
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Free browser-based tools — JSON, PDF, calculators & more
Jun 2026 · quick-utils.dev · its alternatives →
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DevTools ▲39 free dev tools in one tab — JSON, JWT, Regex & more
Jun 2026 · jsonviewer.live · its alternatives →
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Free online developer tools & converters
Nov 2025 · toolstadium.com · its alternatives →
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Swiss-army dev toolkit: JSON, IP, URL & more — free forever
2025 · whatthe.tools · its alternatives →
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24 private, browser-based tools for developers
Jun 2026 · devtoolboxes.net · its alternatives →
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70+ free developer tools that run entirely in your browser
Jul 2026 · space4.dev · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →