DevBench

What it does

DevBench is a free collection of 50+ developer utilities that run entirely in your browser. No login. No rate limits. No data sent to servers. Tools include: → JSON Formatter & Validator → JWT Debugger → Base64 Encoder/Decoder → Regex Tester with live highlighting → UUID / ULID / NanoID Generator → And 45+ more Built for developers who want tools that just work — fast, private, and always available.

146+ free online developer tools — JWT debugger, PDF merge & split, Base64, regex tester, UUID generator, password generator, EMI calculator, and more. No signup, runs in your browser.

Decode JWTs, merge PDFs, convert images, test regex, generate UUIDs, and more — all in your browser. Free, no install. Nothing is uploaded to our servers. What you paste stays in your browser. From JSON and PDFs to money, health, and date helpers — freefrom devbench.co.in

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  CODEBENCHMar 2026 · codeben.ch · ▲3

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  DevTabJul 2026 · devtab.in · ▲5

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  DevToolboxFeb 2026 · devtoolbox.yashnandvana.in · ▲7

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  DevUtilsApr 2026 · tools.wasta-wocket.fr · ▲3

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  DevDash — Developer Tools, FastJul 2026 · usedevdash.dev · ▲4

  17 dev tools, one URL, all client-side

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  DevkitrMar 2026 · ▲3

  130+ Free Browser-Based Tools for Developers

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  /dev/null▲484

  a social network for devs

  Dev tools · 3d 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 · 28d 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 · 26d ago · github.com

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  OpenBot▲362

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

  Dev tools · 23d 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 · 21d ago · talanoa.email

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  CoreSpeed▲332

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  Dev tools · 28d ago · corespeed.io

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  Brew ▲900

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  AI · May 2026 · brew.new

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  Kilo Code for VS Code▲896

  Parallel agents, diff reviewer, and multi-model comparisons

  Dev tools · May 2026 · kilo.ai

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  StoreClaw▲806

  Grow your store profits with agents that know how to sell

  AI · May 2026 · storeclaw.ai

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  PollyReach▲795

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  AI · May 2026 · pollyreach.ai

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  Needle: We Distilled Gemini Tool Calling into a 26M Model▲776

  Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…

  Life & fun · May 2026 · github.com

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  Files.md – Open-source alternative to Obsidian▲730

  🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md

  Dev tools · May 2026 · github.com