A torrent indexer is a website or service that collects and organizes links to torrent files and magnet links. These links allow users to download files through peer-to-peer file sharing networks, such as BitTorrent. Indexers typically categorize content, making it easier for users to find specific files, such as movies, music, or software. Many torrent indexers operate on a public or private basis. Public indexers are accessible to anyone, while private ones require an invitation or registration. Users often rely on these indexers to discover popular or rare content shared by others in the torrenting community.