Soulseek is a peer-to-peer (P2P) file-sharing network and application. The term Soulseek might refer to (1) one of the two networks, or (2) one of the three official user client interfaces.[3] Soulseek is used mostly to exchange music, although users are able to share a variety of files. Soulseek was created by Nir Arbel,[4] an Israeli programmer from Safed.[5]

Quick facts: Developer(s), Initial release, Stable release...
Developer(s)Nir Arbel
Initial releaseApril 8, 2001; 21 years ago (2001-04-08)[1][2]
Stable releaseSoulseekQt build 2021.02.06 (February 6, 2021; 22 months ago (2021-02-06)) [±]
Preview releaseNone [±]
Written inC++, Qt
Operating systemMicrosoft Windows, and macOS and Linux in the newest Qt client
Available inEnglish, Dutch, French, German, Italian, Russian, Spanish, Polish, Estonian
TypePeer-to-peer file sharing
LicenseProprietary freeware

Historically, there have been two independent networks under the Soulseek name, both ran by the same management. The older one is accessed by Soulseek client 156; the newer network accessed by Soulseek client 157 (Windows only) or SoulseekQt (Microsoft Windows, macOS, or Linux platforms).[6] The network accessed by client 156 has since been shut down, as usage had dropped nearly to zero.[6]

New developments are solely on the SoulseekQt client interface. Work on Client 157 (Windows only) stopped in 2008. SoulseekQt has somewhat different functionality compared to the 157 client interface.[7]