DevToolBox

What it does

Free online tools for developers and everyone. JSON formatter, image compressor, QR code generator, regex tester, BMI calculator, password generator and 20+ more tools. Fast, free, no sign-up required.

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  Free DevToolsOct 2025 · ▲52

  1,25,000+ Free Developer Tools, Cheatsheets, Icons, MCP, etc

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  DevNestTools26d ago · ▲2

  Fast, free dev tools that run 100% client-side no signup

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  ToolsNinja - 100+ free online tools10d ago · toolsninja.dev · ▲1

  100+ free online dev tools for free to use on daily basis

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  JoyTools — Free Online Developer Tools24d ago · ▲1

  Fast, free online utilities for devs & digital creators

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  BestTools by PDFGridBox.in27d ago · ▲2

  Best free tools

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  Everyday Dev Tools12d ago · toolsfordev.tools · ▲1

  free developer tools that work offline, in your browser

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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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  Nuphos▲380

  The AI-Native DevOps Workspace.

  Dev tools · 24d ago · nuphos.ai

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  Open-Source eInk Bike Computer▲375

  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 · 1d ago · opentrailpaper.com

• TL
  The load-bearing vocabulary of Claude▲703

  Life & fun · 9d ago · louisabraham.github.io

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  Hey Noah▲641

  A proactive AI executive assistant for founders

  AI · Aug 2026 · heynoah.io

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  Clipto MCP▲640

  Let agents source clips from terabytes of your local video

  Work · 18d ago · clipto.com

• SA
  Simple algorithm and color space to generate diverse skin tones▲627

  Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…

  Life & fun · Aug 2026 · toneyalexander.github.io

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  AdAnt AI▲608

  Claude for viral, high-converting social ads

  AI · Aug 2026

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  I trained a 125M model to autocomplete piano on-device▲598

  I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.

  AI · 16d ago · simedw.com