PureMark

What it does

8 browser-based developer tools. No signup, no install, nothing leaves your browser. - Annotate: arrows, text, shapes, blur on screenshots - JSON Formatter: auto-format via clipboard - Diff Checker: side-by-side/unified - Base64 / URL Encoder-Decoder - Timestamp Converter - JWT Decoder - Chrome Extension: auto-detect formats Everything runs locally. Privacy is the architecture.

• 
  QuickDevJun 2026 · quickdev.cc · ▲2

  19 free developer tools — all client-side, no tracking

• 
  ToolBenchAppJul 2026 · toolbenchapp.com · ▲2

  Free developer tools that run 100% in your browser

• 
  DevToolboxMay 2026 · freecodtools.dev · ▲1

  51 free developer tools that run entirely in your browser

• 
  space4.devJul 2026 · space4.dev · ▲3

  70+ free developer tools that run entirely in your browser

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

  25 free dev tools that run in your browser. No signup.

• 
  CodeUtilMar 2026 · ▲3

  20+ free developer tools that run entirely in your browser

• 
  Dograh▲592

  The open source VAPI alternative

  Dev tools · 25d ago · dograh.com

• 
  Meridian▲530

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

  Dev tools · 20d ago · meridiona.com

• 
  x1▲516

  Lovable for iPhone apps go from idea to App Store

  Dev tools · 11d ago · x1.new

• 
  Computable GPU Index (CGI)▲424

  The first open-source price index for GPU compute

  Dev tools · 10d ago · getcomputable.com

• 
  Open-Source eInk Bike Computer▲403

  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

• 
  The GTM Co-Founder▲402

  Open-source GTM skills for technical founders

  Dev tools · 29d ago · gtmcofounder.com

• 
  Brila▲1,367

  One-page websites from real Google Maps reviews

  AI · Apr 2026 · brila.ai

• AG
  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

• IB
  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

• 
  Fathom 3.0▲803

  AI meeting notes: now bot-free, in ChatGPT & Claude + more

  AI · Apr 2026 · fathom.ai

• BC
  Brutalist Concrete Laptop Stand (2024)▲786

  Life & fun · Apr 2026 · sam-burns.com

• IB
  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