# proginosko/LeechBlockNG

LeechBlock NG (Next Generation) for Firefox is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.

Repository: https://github.com/proginosko/LeechBlockNG
Canonical: https://ross.abutalabs.com/products/leechblockng
Homepage: https://www.proginosko.com/leechblock/
Language: JavaScript
License: MPL-2.0
License Family: copyleft
Last push: 2026-08-12T17:59:45+00:00

## Health v2 (maintenance only)
Score: 93/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 84, longevity 100
- inputs: {"age_days": 3511, "days_push": 21, "days_rel": 29, "gap_med": 61.5, "n_releases_24m": 9}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1059, forks 104 (observed 2026-08-28T04:03:25.411872+00:00)

## What it is
LeechBlock NG is a free browser extension for Firefox, Chrome, Edge, and other Chromium-based browsers that blocks time-wasting websites according to user-defined schedules and time limits. It supports up to 30 block sets with wildcards, exceptions, lockdowns, passwords, and keyword-based blocking.

## Use cases
- block distracting websites during work hours
- limit social media use to 10 minutes per hour
- lock myself out of time-wasting sites for a set duration
- schedule website blocking for specific days and times
- block pages containing certain keywords or from referring sites
- add friction to my own browsing with a password on settings

## When to choose
- you want a free, flexible, self-controlled site blocker for Firefox or Chromium browsers
- you need per-set schedules, time limits, wildcards, and exceptions
- you want to reduce your own procrastination rather than enforce controls on others

## When to avoid
- you need parental controls or content filtering for offensive material
- you must prevent the browser from ever connecting to blocked sites (use a HOSTS file or network-level blocker)
- you need blocking enforced by someone other than the user

## Facets
- artifact type: plugin
- maturity: active
- function: security, developer-tools
- domain: developer-tools, browser-extensions, self-hosted
- platform: browser-extension, browser
- tags: site-blocker, productivity, focus, time-management, firefox, chrome, edge, distraction-blocking

## Member repositories
- proginosko/LeechBlockNG (main) score 93

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:25.411872+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 2026-08-30T06:57:21.697960+00:00, confidence not recorded.
  - readme: https://github.com/proginosko/LeechBlockNG (fetched 2026-08-28T04:03:25.411872+00:00, sha d106696b2bfa)
  - homepage: https://www.proginosko.com/leechblock/ (fetched 2026-08-29T12:59:13.524253+00:00, sha 44e6d32d9e7d)
  - site_page: https://www.proginosko.com/leechblock/install (fetched 2026-08-29T12:59:13.533311+00:00, sha 265452e4a88c)
  - site_page: https://www.proginosko.com/leechblock/documentation (fetched 2026-08-29T12:59:13.535184+00:00, sha b364e23246ce)
  - site_page: https://www.proginosko.com/leechblock/faq (fetched 2026-08-29T12:59:13.537712+00:00, sha dd9e4f6b210a)
- Data as of 2026-08-30T08:39:29.467469+00:00.