# gorhill/uMatrix

uMatrix: Point and click matrix to filter net requests according to source, destination and type

Repository: https://github.com/gorhill/uMatrix
Canonical: https://ross.abutalabs.com/products/umatrix
Language: JavaScript
License: GPL-3.0
License Family: copyleft
Archived: true
Last push: 2021-07-20T17:57:55+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4340, "days_push": 1870, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4686, forks 482 (observed 2026-08-28T04:08:56.988120+00:00)

## What it is
uMatrix is a browser extension that lets users point-and-click filter network requests by source, destination, and type, acting as a firewall in block-all/allow-exceptionally mode. It is a fork of HTTP Switchboard aimed at advanced users who can diagnose and un-break sites using its built-in request logger.

## Use cases
- block third-party scripts and trackers per domain
- control which requests a website can make
- filter network requests by type and destination
- privacy firewall for my browser
- allow or block cookies, scripts, and XHR per site
- inspect and log all browser network requests

## When to choose
- you are an advanced user comfortable debugging broken sites
- you want fine-grained, per-domain control over browser network requests
- you want a strict default-block privacy firewall with a matrix UI

## When to avoid
- you want a set-and-forget blocker that never breaks sites
- you are a beginner who cannot use a request logger to un-break pages
- you need actively maintained software with recent releases

## Facets
- artifact type: plugin
- maturity: maintenance
- function: security, privacy, middleware
- domain: privacy, security, browser-extensions, web-development
- platform: browser-extension, browser, cross-platform
- tags: content-blocking, request-filtering, firewall, firefox, chrome, opera, advanced-users, webrequest

## Member repositories
- gorhill/uMatrix (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:56.988120+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:19:17.294520+00:00, confidence not recorded.
  - readme: https://github.com/gorhill/uMatrix (fetched 2026-08-28T04:08:56.988120+00:00, sha 69dc6257f356)
- Data as of 2026-08-30T08:39:29.467469+00:00.