Sam Hewitt - author icon theme Paper (https://github.com/snwh/paper-icon-theme)
Alexey Varfolomeev - author icon theme Papirus (https://github.com/PapirusDevelopmentTeam)
Mohammed Aquib Azad - additional icons (https://github.com/azadaquib)
Tomasz Przybył - Makefile scripts (https://github.com/FadeMind)
Some sources use from Numix & Numix Circle icon themes (https://github.com/numixproject)
Some sources use from elementary+ icon theme (https://github.com/mank319/elementaryPlus)