Slrn is a text-based open source news reader that was originally developed for Unix-like operating systems and VMS. But now he is also available for other operating systems such as Microsoft Windows and OS / 2 are available. It is released as free software under the GNU General Public License ( GPL).

Slrn was originally written by John E. Davis. The first version was released in 1994. The acronym stands for " S-Lang read news '. S-Lang is the interpreter language, based on the slrn. It runs on the console, and is characterized in that it is highly configurable. It can be configured with the scripting language S-Lang.