NexusTools

What it does

NexusTools is a collection of 39 free developer tools that run entirely in your browser. No sign-ups, no data collection, no uploads everything is processed client-side Tools include: JSON/SQL/YAML formatters, color converters, regex tester, JWT decoder/generator, password generator, QR codes, image compressor, CSS visual generators, LLM token counter, CIDR calculator, and more. Built with Next.js 15, TypeScript, and Tailwind CSS. Available in English, Spanish, and Portuguese. Open source (MIT)

Free online developer tools: favicon generator, JSON formatter, meta tag generator, and more. Fast, private, runs in your browser.

Fast, private, open-source tools that run entirely in your browser. No uploads, no tracking, no accounts. Generate favicons from text, emoji, or images. Download as ICO, PNG, SVG with all required sizes. Format, validate, and minify JSON. Syntax highlighting, error detection, and tree view. Generate SEO meta tags, Open Graph, and Twitter Cards. Live preview of Google and social media results. Encode text to Base64 or decode Base64 back to text. Supports UTF-8 and URL-safe variants. Convert colors between HEX, RGB, and HSL. Visual color picker with live preview and CSS output. Convert between px, rem, em, %, vh, and vw. Customizable base font size and viewport dimensions. Generate MD5,…from toolnexus.dev

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  DevTools2025 · onlinewebdevtools.com · ▲18

  Collection of free online tools to help in web development

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  codetools.run Mar 2026 · codetools.run · ▲2

  Free developer tools that run entirely in your browser

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  DevToolsMay 2026 · dev-tools-tan.vercel.app · ▲2

  Fast, private, and client-side developer tools in one hub

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  DevTools – 50+ developer tools AIOMar 2026 · quan1229.com · ▲2

  JSON, Regex, JWT, Markdown and more — all in one toolbox

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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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  NexusTools — Discord Community ToolkitAug 2026 · nexustools-discord-c-wt2t.bolt.host · ▲1

  Free, zero-friction web tools for Discord server managers.

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  /dev/null▲483

  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 · 27d 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 · 25d 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▲345

  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 · 20d ago · talanoa.email

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  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 28d ago · corespeed.io

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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