DevToolbox

What it does

51 free developer tools that run entirely in your browser — JSON Formatter, JWT Decoder, Regex Tester, Base64, UUID Generator, Hash Generator, Cron Builder, SQL Formatter, and 43 more. Privacy-first: every tool is 100% client-side. Paste API keys, JWT tokens, or private configs — nothing ever reaches a server. Keyboard shortcuts on every tool. One-click example data. Input history. No account. No sign-up. No ads inside the tool area.

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  DevToolBoxJun 2026 · devtoolboxes.net · ▲3

  24 private, browser-based tools for developers

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  DevToolboxFeb 2026 · ▲7

  150+ Free Developer Tools in One Place

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  RAW - Developer ToolkitMay 2026 · rawtools.site · ▲6

  30+ dev tools in one place fast, free, and 100% client-side.

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  DevTools Jun 2026 · jsonviewer.live · ▲3

  9 free dev tools in one tab — JSON, JWT, Regex & more

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  DevTabJul 2026 · devtab.in · ▲5

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

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  DevTools SuiteMay 2026 · devtoolssuite.dev · ▲3

  Privacy-first dev tools run in browser. No login no tracking

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  Dograh▲592

  The open source VAPI alternative

  Dev tools · 25d ago · dograh.com

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  Meridian▲530

  Don't let your work go unnoticed. Get promoted!

  Dev tools · 20d ago · meridiona.com

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  x1▲516

  Lovable for iPhone apps go from idea to App Store

  Dev tools · 11d ago · x1.new

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  The GTM Co-Founder▲402

  Open-source GTM skills for technical founders

  Dev tools · 29d ago · gtmcofounder.com

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  Open-Source eInk Bike Computer▲398

  OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.

  Dev tools · 2d ago · opentrailpaper.com

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  Nuphos▲380

  The AI-Native DevOps Workspace.

  Dev tools · 24d ago · nuphos.ai

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  Brew ▲905

  Like Claude design for email marketing

  AI · May 2026 · brew.new

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  Kilo Code for VS Code▲897

  Parallel agents, diff reviewer, and multi-model comparisons

  Dev tools · May 2026 · kilo.ai

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  StoreClaw▲805

  Grow your store profits with agents that know how to sell

  AI · May 2026 · storeclaw.ai

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  PollyReach▲796

  Give your agent a real number and voice to make calls.

  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

  Dev tools · May 2026 · github.com