# collinbarrett/FilterLists

:shield: The independent, comprehensive directory of filter and host lists for advertisements, trackers, malware, and annoyances.

Repository: https://github.com/collinbarrett/FilterLists
Canonical: https://ross.abutalabs.com/products/collinbarrett-filterlists
Homepage: https://filterlists.com
Language: C#
License: MIT
License Family: permissive
Topics: adblock, curated-list, entity-framework-core, react, typescript, rest-api, docker, ant-design, create-react-app, aspnetcore, hacktoberfest, azure, azure-app-service, azure-sql-database, azure-static-web-apps, dotnet, dotnet-aspire
Last push: 2026-08-25T17:42:27+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 3553, "days_push": 8, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_readme
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1645, forks 141 (observed 2026-08-28T04:05:16.194367+00:00)

## What it is
FilterLists is an independent, comprehensive web directory and REST API cataloging filter and host lists for blocking advertisements, trackers, malware, and annoyances across ad blockers like uBlock Origin, Adblock Plus, and AdGuard. It is built as an ASP.NET Core API with a React frontend, deployed to Azure with Docker support.

## Use cases
- find adblock filter lists for uBlock Origin
- discover host lists to block trackers and malware
- search a directory of ad-blocking subscriptions
- query an API of filter list metadata
- find lists to block annoyances and cookie banners
- compare filter lists for AdGuard or Adblock Plus

## When to choose
- you need to discover or compare adblock/host filter lists
- you want programmatic access to filter list metadata via a REST API
- you maintain an ad blocker and want a source of list subscriptions

## When to avoid
- you need an actual ad-blocking engine rather than a directory of lists
- you want a self-hosted ad blocker instead of a catalog

## Facets
- artifact type: service
- maturity: active
- function: search-engine, api-framework, web-framework, self-hosted
- domain: privacy, security, web-development, developer-tools, crawlers
- platform: cloud, dotnet, browser
- tags: adblock, filter-lists, ad-blocking, tracker-blocking, host-lists, directory, rest-api, react, aspnetcore, web-server, docker

## Member repositories
- collinbarrett/FilterLists (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:16.194367+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 2026-08-30T03:45:25.177069+00:00, confidence not recorded.
  - homepage: https://filterlists.com (fetched 2026-08-29T11:18:44.049968+00:00, sha 3deeaa5049f8)
- Data as of 2026-08-30T08:39:29.467469+00:00.