TraceLens

What it does

Debugging web apps is messy and slow. Logs are scattered, and reproducing issues can feel impossible. TraceLens gives you a clear, visual view of what’s happening in your web app in real time. See every action, every request, and quickly pinpoint bugs — no messy logs or guesswork. I’d love for you to try TraceLens and let me know what you think, and if you think it's a good idea or not — any feedback helps improve it!

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  Trace2024 · trytrace.app · ▲254

  A time tracker that visualizes your app activity

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  TraceLens Visualizing Distributed Systems2024 · tracelens.io · ▲6

  TraceLens is a new user interface and data collector for OpenTelemetry-based systems. Although there are existing tools like Jaeger and Zipkin that offer some visualization capabilities, I wanted a solution that could provide a deeper level of insight. TraceLens is not designed for production environments, but as a debugging tool to help developers better understand the intricacies of their systems. Key features are detailed component diagrams. and sequence diagrams.

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  Replay2021 · replay.io · ▲279

  Your time travel debugger

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  Traceroute Visualizer2025 · kriztalz.sh · ▲98

  Hey everyone, I've made this website that I hope can help some people. The original inspiration comes from being tired of having a specific site (and finding it!!) that serves my needs for a single purpose. Straight forward tools, no fuss. The objective is to be fully in-browser, no login and if possible without contacting a remote server. PGP Key Analyser - Analyze PGP keys directly in your browser - finally I can see the infos without having to download the key on my device Proton Date - Check ProtonMail account creation dates - pretty niche I admit Favicon Hash - Generate website favicon…

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  FlowLensDec 2025 · magentic.ai · ▲134

  Hi HN, We often run into this with coding agents like Claude Code: debugging turns into copy-pasting logs, writing long explanations, and sharing screenshots. FlowLens is an MCP server plus a Chrome extension that captures browser context (video, console, network, user actions, storage) and makes it available to MCP-compatible agents like Claude Code. You can try it here: https://magentic.ai/flowlens Any feedback—good, bad, or brutal—is welcome.

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  Trace2021 · gotrace.info · ▲85

  A lightweight GraphQL query performance monitoring dev tool

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  /dev/null▲486

  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 · 28d 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 · 26d 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▲346

  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 · 21d 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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  isometric.nyc – giant isometric pixel art map of NYC▲1,325

  Hey HN! I wanted to share something I built over the last few weeks: isometric.nyc is a massive isometric pixel art map of NYC, built with nano banana and coding agents. I didn't write a single line of code. Of course no-code doesn't mean no-engineering. This project took a lot more manual labor than I'd hoped! I wrote a deep dive on the workflow and some thoughts about the future of AI coding and creativity: http://cannoneyed.com/projects/isometric-nyc

  AI · Jan 2026 · cannoneyed.com

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  Cowork▲1,088

  Turn Claude into your digital coworker

  AI · Jan 2026 · claude.com

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  DataFast▲867

  Revenue-first analytics

  Growth · Jan 2026 · datafa.st

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  OpenClaw▲836

  The AI that actually does things

  AI · Jan 2026 · openclaw.ai

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  Kilo Code Reviewer▲799

  Automatic AI-powered code reviews the moment you open a PR

  Dev tools · Jan 2026 · kilo.ai

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  PostSyncer▲793

  AI Content Maker, for Social Media Publishing

  AI · Jan 2026 · postsyncer.com