MX Linux with Xfce – download
Libreoffice – download
Odoo – double-entry accounting + billing + Enterprise Resource Planning, multicurrency
Dolibarr ERP – POS + single-entry accounting + Enterprise Resource Planning + with Timesheet for basic Payroll, single currency
FLOREANT – POS Point of sale
Gnucash – double-entry accounting, multicurrency, payroll, android app
Kmymoney – download