Disenter - List of public news servers. Search for servers carrying particular newsgroups. Provides some statistics on listed servers.
Dotsrc.org: Usenet - Provides public access to local, Danish, and some international newsgroups, and closed access to Aalborg University campus newsgroups.
Free News Servers - A partial list of public or open news servers and links to other web sites that list such servers.
Free Usenet News Servers - Continuously updated database of Usenet servers. Includes ability to search for servers based on newsgroups carried and results can be sorted based on various criteria.
Links and FAQ about Open Nntp Servers - A document covering various aspects of open news servers, including a list of available ones. Maintained by Sebastien Willemijns.
List of Open NNTP News Servers - Collection of public servers that may carry newsgroups not supported by a given ISP's server and links to commercial ones. Includes information to decode yEnc attachments.
News.motzarella.org - A private project providing free access to text-only newsgroups. SSL encryption and a web gateway based on the open source NewsPortal software are available, as well as UUCP Batches on demand.
Newsparrot - A collection of servers regularly tested and verified to check for the availability of newsgroups, headers, speed and posting.
News.tornevall.net - Provides free access to text-only newsgroups. Registration required; detailed information and statistics about the server available.
Newzbot - Searchable, sorted list of open news servers.
Open News Network - A network both in the technological and in the social sense. It aims to provide open, non commercial access to text based Usenet.