Napster

Amster
Presents this open source OpenNap client for Amiga. Includes frequently asked questions and screenshots.
http://www.vindvejr.dk/jacob/amiga/amster/

AudioGnome
Freeware napster-compatible client for Windows.
http://www.audiognome.com/

The Ballad Free File Sharing Network
Allow users of several file sharing programs to connect to their network of servers to search for and download items in a P2P environment.
http://www.balladp2p.com/

FindLaw Napster News
Archive of articles on the legal disputes against Napster from Findlaw.com
http://news.findlaw.com/legalnews/lit/napster/

Gnapster
GNOME napster client distributed under GPL. Runs on UNIX under X-windows.
http://sourceforge.net/projects/gnapster

GotNap
Keeps an automatically updated list of active OpenNap servers.
http://www.gotnap.com/

GTK-Napster
Napster client based on GTK++.
http://www.geocities.com/xilliator/

JLop
Cross-platform, open source OpenNap client written in Java. It is able to download the same file from different concurrent sources simultaneously.
http://jlop.sourceforge.net/

jNapster
Open source Napster client written in Java. Needs to be compiled, and the included server list being outdated, it has to be replaced.
http://sourceforge.net/projects/jnapster/

Lopster
GTK Napster Client. [Open Source]
http://lopster.sourceforge.net/

Nap
Presents this open source, text based OpenNap client which works on various platforms with extensive documentation. By Peter Selinger.
http://nap.sourceforge.net/

napMan
Open source infobot that provides a real time glimpse into the current state of the worldwide network of nap servers that are based on either the closed source Napster protocol or the open source opennap protocol.
http://napman.sourceforge.net/

NapMX
Offers an open source application that allows users to add OpenNap and SlavaNap servers to WinMX servers list.
http://speed47.chez-alice.fr/napmx/index.php

OpenNap
Extends the Napster protocol to allow sharing of any media type, and the ability to link servers together. In addition, chat forums similar to IRC are available. Open source under the GNU GPL.
http://opennap.sourceforge.net/

Opennap-NG
Opennap NG is a further development of the well known opennap-server created by drscholl.
http://opennap-ng.sourceforge.net/

Rillonap
A network of OpenNap servers that can be accessed either by the original Napster client or by OpenNap clients. Provides links for such clients, presents the rules of the network and offers a support forum.
http://we.servep2p.com/rillonap.htm

Riscster
Open source OpenNap client for computers running RISC OS. Includes documentation.
http://riscster.iconbar.com/

Salon.com Napster Directory
Archive of editorials on the Napster controversy.
http://dir.salon.com/topics/napster/

SlavaNap
Presents this freeware Napster-compatible server for Windows, includes documentation, a FAQ section and a support forum. An unsupported version for GNU/Linux is also offered.
http://www.slavanap.org/

SunshineUN
Open source OpenNap client for Windows.
http://www.networksunshine.de/

Warpster
A Napster client for OS/2 Warp v4 with easy to use notebook interface and ability to resume downloads.
http://silk.apana.org.au/warpster/

WinLop
Presents this Lopster port for Windows, includes screenshots, frequently asked questions and a message board.
http://winlop.sourceforge.net/

XNap
Crossplatform Napster client, includes meta-search on multiple servers, autoconnect, and an optional command line interface. [GPL]
http://xnap.sourceforge.net/

Filesharefreak.com: OpenNap for P2P File Sharing
Describes the current state of the OpenNap scene, briefly presents common clients along with their screenshots and explains how to find active servers. <small>(January 4, 2008)</small>
http://filesharefreak.com/2008/01/04/opennap-for-p2p-file-sharing/