IOTA-SDK - is an open-source modular ERP. An alternative to SAP, Oracle, Odoo written in Go with modern look & feel

Odoo CRM, Mail & Newsletter advanced features

Self-hosted business platform with CRM, HRM, invoices, projects, e-signatures, calendar, drive, docs, drawing, and tasks. Multi-tenant, 5 languages, with an Odoo importer to bring your data across. Alternative to Zoho and Odoo.