Odoo, Salesforce, Dolibarr, Bitrix24, Streak CRM, ERPNext, Mautic, OrangeHRM, SugarCRM, EspoCRM , Tryton, MRPEasy, Sentrifugo HRMS, Megaventory, BarCloud, Composity ERP, LLamasoft, Zebra eHR Suite, SPS Commerce, Plex Systems, Statii, HighJump are some alternatives to OpenPapyrus.