| Leafnode | |
|---|---|
| Original author(s) | Arnt Gulbrandsen | 
| Developer(s) | Matthias Andree | 
| Initial release | 1995 | 
| Stable release | 1.12.0    / May 26, 2022 [1]  | 
| Written in | C | 
| Operating system | Unix-like | 
| Available in | English | 
| Type | Usenet server | 
| License | LGPLv2, [2] ISC [3] | 
| Website | www | 
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.
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.