BuiltItDev

What it does

BuiltItDev is a collection of 39 developer tools that run entirely in your browser. JSON formatter, Base64, regex tester, JWT decoder, hash generator, color converter, markdown previewer, URL encoder and more. Everything is client-side — your data never leaves your machine. No sign-up required. No paywalls. Just open the tool and use it. Built with Next.js, TypeScript, fully static. Each tool has its own URL so you can bookmark exactly what you need.

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  dev101.ioJul 2026 · dev101.io · ▲6

  One box for every dev utility — runs in your browser

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  PinusX DevToolsFeb 2026 · ▲2

  26 free developer tools — no signup, no ads, 100% private

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  DevToolBoxJun 2026 · devtoolboxes.net · ▲3

  24 private, browser-based tools for developers

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  DevKitFeb 2026 · ▲4

  26 serverless dev tools that run in your browser

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  DevTabJul 2026 · devtab.in · ▲5

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

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  DevToolKitJun 2026 · devtools-site-301.pages.dev · ▲1

  14 free browser dev tools, no tracking, offline, 7 languages

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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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  Computable GPU Index (CGI)▲423

  The first open-source price index for GPU compute

  Dev tools · 10d ago · getcomputable.com

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  Open-Source eInk Bike Computer▲406

  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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  The GTM Co-Founder▲402

  Open-source GTM skills for technical founders

  Dev tools · 29d ago · gtmcofounder.com

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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

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

  Dev tools · May 2026 · github.com