FilterLists vs UK Police

FilterLists is Collin Barrett's independent, actively-maintained directory of filter and host lists used by adblockers, firewalls, and DNS sinkholes to block ads, trackers, malware, and other unwanted content. Its ASP.NET Core REST API serves the same catalog that powers the site -- filter lists, the domains/URLs they target, licenses, and maintainer info -- with an interactive Swagger UI for exploring the schema before writing a query. The API and site are fully free and keyless, open-sourced on GitHub with commits as recent as this week. The API lives entirely on a separate `api.filterlists.com` host -- the intuitive REST paths on the main `filterlists.com` domain just return the site's own SPA shell.

The UK Police API publishes crime, stop-and-search, and neighbourhood-policing data reported by the 43 territorial forces of England and Wales, going back to December 2010 for street-level crime. It's a keyless JSON REST API -- force listings, neighbourhood team info, individual crime and outcome records, geo-radius crime queries -- released under the Open Government Licence, so results can be reused (including commercially) with attribution. Anonymous requests are capped at 15 per second with a burst of 30 before a 429 kicks in, comfortably enough for the dashboards and research tools that already build on it.