Name of the software: GNU Unifont
Project Homepage: https://savannah.gnu.org/projects/unifont/
Why we should include this into the repository, i.e. what does it do that the alternatives do not?: It is the most comprehensive font package, especially for the more obscure and esoteric unicode symbols. As of yet, there is no package in the Solus repo that performs this function to the extent that Unifont does.
Is it open source?: "The source code is licensed under GPLv2+. The font is licensed under GPLv2+ with GNU's font embedding exception. The Unifont Texinfo manual is licensed under GFDLv1.3+." taken from the website.
Most up to date version: https://mirror.squ.edu.om/gnu/unifont/unifont-14.0.01/