Leafnode is a store-and-forward NNTP (or Usenet) proxy server designed for small sites with just a few active newsgroups, but very easy to set up and maintain, when compared to INN. Originally created by Arnt Gulbrandsen[4] in 1995 while he was working at Trolltech, it is currently maintained by Matthias Andree and Ralf Wildenhues.

Original author(s)Arnt Gulbrandsen
Developer(s)Matthias Andree
Initial release1995 (1995)
Stable release
1.11.12 / March 27, 2021; 14 months ago (2021-03-27)[1]
Written inC
Operating systemUnix-like
Available inEnglish
TypeUsenet server
LicenseLGPLv2,[2] ISC[3]

The term leaf node can also be used to describe a node on a binary tree (or any other sort of tree that has nodes) which has no sub-nodes.


  1. ^ "Leafnode 1.11.12". 27 Mar 2021. Retrieved 6 Apr 2021.
  2. ^ "Sourceforge summary page". Retrieved 7 Apr 2021.
  3. ^ "Debian copyright file". Retrieved 7 Apr 2021.
  4. ^ Krasel, Cornelius. "Leafnode FAQ". Leafnode. Retrieved 2006-08-15.

External linksEdit