Usenetix  
   Picture search engine featuring fast thumbnails, automatic grouping by series, and single-click batch download. Subscription service.
   http://www.usenetix.com

MP3 Locator  
   Search engine for MP3 files on Usenet newsgroup.
   http://www.mp3locator.com

Google Groups  
   Google has acquired Deja.com's Usenet Archive. Entries date back to the early days of Usenet.
   http://groups.google.com/

CyberFiber Newsgroups  
   Searchable directory to newsgroups on the Internet.
   http://www.cyberfiber.com/index.html

Usenet Address Database  
   Search for e-mail addresses if you know the name of a person, or the name of the organization that provides their net access. Returns the entries from addresses collected from Usenet postings between July 1991 and February 1996.
   http://usenet-addresses.mit.edu/

Yarchive  
   Archive of Usenet posts. Personal collection of Norman Yarvin.
   http://yarchive.net/

News Group Search  
   Search all of the major UseNet newsgroup postings from one page.
   http://newsgroups.langenberg.com/

Linuxbroker: Newsgroups  
   Search Linux newsgroups in the alt.os.linux.* and comp.os.linux.* hierarchies. Daily news and applications releases tracking are also available.
   http://www.linuxbroker.com/news/newsgroups.html

Delà News Project  
   Open source project for a distributed searchable Usenet archive.
   http://delanews.sourceforge.net/

Newsserver Suchdienst  
   A search engine for free accessible news servers.
   http://findolin.com/

Paingwin's NNTP Server Checker  
   Searches webpage for NNTP links and connects to each of them to find working ones. You can also search for a specific newsgroup. Very easy to use, pretty interface, lots of options, and produces an HTML webpage with the results.
   http://paing.sourceforge.net

Newzsearch  
   Search for binaries/movies/mp3s in alt.binaries.*. Automatic multipart detection.
   http://www.newzsearch.com

Usenet Newsgroups Activity Statistics  
   Lists the most popular newsgroups based on articles read or posted, bytes posted, and most significant change in number of articles.
   http://usenetstats.com

Ithaki Usenet & Mailing Lists  
   Search for Usenet newsgroups, newsgroup posts and mailing lists hosted at Google, Yahoo, Topica and other hosts.
   http://usenet.ithaki.net

Prolix  
   Collects messages from several computing related newsgroups and stores them in a searchable database.
   http://www.prolix.be

NetNews Tracker  
   Free service that searches Usenet newsgroups daily for any phrases that you choose, then delivers any new hits to you via e-mail.
   http://www.netnewstracker.com

Bincrawler.com  
   Searchable archive of alt.binaries groups.
   http://www.bincrawler.com

ngindex.com  
   Search binary newsgroups based on subject and/or file name. Browse groups. Subscription based (or view nfo files - informational descriptions of the binaries - for free).
   http://www.ngindex.com/

Binhound  
   Music, video, Movies and Photographs/Images Focuses on alt.binaries groups.
   http://www.binhound.net

Newzbin  
   Index of usenet content which may enable you to download items from another server. The focus is on binaries (for example software, music, or video).
   http://www.newzbin.com

NewsgroupAlert.com  
   Service where users set up automatic searches and are notified via email when a post matches the search criteria. Use the web interface to review search results.
   http://www.newsgroupalert.com

NewsArch  
   An archive for selected mailing lists and newsgroups, with a focus on computer programming. Simple search feature available.
   http://www.newsarch.com/