Nimbus Roman No 9 L is a serif typeface created by URW Studio in 1987, and eventually released under the GPL and AFPL (as Type 1 font for Ghostscript) in 1996 and LPPL in 2009. It features Normal, Bold, Italic, and Bold Italic weights, and is one of several freely licensed fonts offered by URW++.
It is a standard typeface in many GNU/Linux distributions. It was used as default font in OpenOffice.org Writer in some GNU/Linux distributions (e.g. Ubuntu - up to version 8.10; since Ubuntu 9.04 the default font was changed to Liberation Serif).