Contacts, customers and suppliers management
Products management
Invoices management
Orders management
Contracts management
Agenda
Foundations management module
Point of sale
Project management and gantt charts
Timesheets
Bank account management, concilitation
Ledger - Accounting
Stock management
Mass emailings
Management of employees leave requests
LDAP integration
Import/Export wizards
A lot of other external modules (technical interfaces or business features)
Installer for Windows, Debian/Ubuntu, Fedora/Redhat/OpenSuse or online Server
Also available from Cloud suppliers: https://saas.dolibarr.org