LightStep Sandbox

What it does

A guided, interactive scenario in which you can test your debugging skills using LightStep's free sandbox. It's a fun way to check out distributed tracing and other observability tools, without having to sign up for anything or fill out any forms.

• AW
  A web debugger an ex-Cloudflare team has been working on for 4 years2024 · ▲886

  Hey HN, I wanted to show you a product a small team and I have been working on for 4 years. https://jam.dev It’s called Jam and it prevents product managers (like I used to be) from being able to create vague and un-reproducible bug tickets (like I used to create). It’s actually really hard as a non-engineer to file useful bug tickets for engineers. Like, sometimes I thought I included a screenshot, but the important information the engineer needed was what was actually right outside the boundary of the screenshot I took. Or I'd write that something "didn't work" but the engineer…

• IV
  I've been making JavaScript sandbox alone for 6 years2022 · playcode.io · ▲397

  Hi HN! Thanks for your attention to my post. It was a big challenge to run most of Node.js packages in browser, fast moreover. Virtual File system, resolve import/export. I got cold many times, depressions, burned out, yet still alive and finished it. Many guys helped me with an advice. Many users give a lot of positive feedback. There are 200,000 monthly unique users. I work full time now because of the freemium business model. To be honest - I am happy after many years of hard work.

• 
  Jam Tracing2023 · ▲200

  Instantly record and debug across your entire stack

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  JamGPT2023 · ▲245

  AI debugging assistant to fix bugs faster

• 
  Lightrun Observability Platform2023 · ▲63

  Dynamically instrument Live applications from your IDE

• WM
  We made an MCP server so Cursor can debug Node.js on its own2025 · npmjs.com · ▲139

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