DevUtils

What it does

A suite of 21 essential utilities for developers — JSON formatter, Base64, URL encoder, UUID generator, JWT decoder, CSS formatter, regex tester, hash generator, password generator, timestamp converter, HTML encoder. No signup. No server. Dark theme.

Free online developer tools suite — JSON Formatter, Base64, UUID, JWT, Hash, Password, Color, CSV, Markdown and more. No signup, no ads, all processing runs in your browser.

Search 25 developer tools. Everything runs locally in your browser. Yes. Every tool on DevUtils is completely free to use. There are no hidden fees, no premium tiers, and no usage limits. No. All tools run entirely in your browser using native JavaScript. Your JSON, text, passwords, or files never leave your device — there is no backend server handling your data. No account is required. Open the tool, paste your data, and get results instantly. No email, no password, no signup process. DevUtils offers 20+ tools covering JSON formatting, Base64 encoding, UUID generation, JWT decoding, hashing, password generation, color conversion, CSV / JSON / YAML conversion, Markdown preview, CRON…from tools.wasta-wocket.fr

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  NicheUtils: 40+ Free Dev Tools 2025 · nicheutils.com · ▲9

  40+ dev tools that run 100% in your browser - no servers

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  Developer UtilitiesJan 2026 · devutil.dev · ▲3

  https://www.devutil.dev/

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  Tools20252025 · ▲8

  Free developer tools - JSON, passwords, encoding & more

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  ViteTools.devNov 2025 · ▲10

  Free online developer tools & utilities

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  DevMintJul 2026 · dev.mintkit.in · ▲2

  free, no-signup tools for devs, finance & health

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  DevTabJul 2026 · devtab.in · ▲5

  110+ dev tools. One tab. Zero server calls.

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  Run full iOS 16.5 firmware on Android Devices▲514

  Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.

  Dev tools · 1d ago · github.com

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  /dev/null▲492

  a social network for devs

  Dev tools · 4d ago · dev-null.sh

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  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 29d ago · github.com

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  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

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  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 24d ago · openbot.run

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  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 22d ago · talanoa.email

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  Brila▲1,364

  One-page websites from real Google Maps reviews

  AI · Apr 2026 · brila.ai

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  A game where you build a GPU▲964

  Thought the resources for GPU arch were lacking, so here we are

  Life & fun · Apr 2026 · jaso1024.com

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  I built a tiny LLM to demystify how language models work▲915

  Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.

  AI · Apr 2026 · github.com

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  Fathom 3.0▲800

  AI meeting notes: now bot-free, in ChatGPT & Claude + more

  AI · Apr 2026 · fathom.ai

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  Brutalist Concrete Laptop Stand (2024)▲786

  I made a laptop stand out of solid concrete, in the style of brutalist architecture, with themes of urbex and urban decay

  Life & fun · Apr 2026 · sam-burns.com

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  I built a frontpage for personal blogs▲783

  With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.

  AI · Apr 2026 · text.blogosphere.app