The software library numeralgo. The software library numeralgo of netlib collects the packages that the author submitted together with his paper to the journal numerical algorithms. The items of the library are named as na$x$, where $x$ stands for a sequential number identifying a specific package. In the first section, a survey of the old packages will be reported. In the next section, we list the new software related to the papers published in this issue. In the last section, we describe the netlib repository and how to obtain an item of the library numeralgo.