
HAR Viewer
Inspect HAR files fast, offline, private, no uploads needed.
What it does
A free, open-source HAR file viewer that runs entirely in your browser. Drop in ahar file and get instant search, filtering, timing waterfalls, performance insights, and export tools. Handles thousands of requests without breaking a sweat. No servers, no uploads, your data never leaves your machine.
Does the same job
all alternatives →




- WOWebtor – open-source torrent streaming engine2025 · webtor.io · ▲34
Hi HN, I built Webtor — an open-source engine that lets you stream .torrent and magnet links directly in the browser. - No swarm exposure — all torrent traffic runs server-side - In-browser playback via HLS - Progressive download with resume support - Lightweight JS SDK and public API - Fully self-hostable via Docker Demo: https://webtor.io GitHub: https://github.com/webtor-io SDK: https://github.com/webtor-io/embed-sdk-js Self-hosted: https://github.com/webtor-io/self-hosted API:…
More dev tools this month
the category →



The first open-source price index for GPU compute
Dev tools · 10d ago · getcomputable.com

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

Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com
Launched alongside, March 2026
the whole month →

Switch from ChatGPT to Claude with import memory feature
AI · Mar 2026 · claude.com


