We can customize and add features to any PHP Laravel, Codeigniter Scripts available at CodeCanyon few scripts are listed below.
UltimatePOS and ERP by Ultimatefosters
Paymoney by Techvill
Perfex CRM
Rise CRM
Karenderia Multiple Restaurant System
Irestora Restaurant Management System
People Pro HRM System
InfixEdu including all other Scripts by the author
and almost all other scripts from CodeCanyon.