Addons for the management of multi company instances as well as

addon	version	maintainers	summary
account_invoice_consolidated	14.0.1.0.2		Consolidate your invoices across companies
account_invoice_inter_company	14.0.1.3.1		Intercompany invoice rules
account_invoice_inter_company_queued	14.0.1.0.1		Generate invoices using jobs
account_invoice_inter_company_sale	14.0.1.0.0		Show sale related fields
account_move_change_company	14.0.1.0.0		Allow to change company of account moves
account_multicompany_easy_creation	14.0.1.0.0		This module adds a wizard to create companies easily
account_payment_other_company	14.0.1.0.0		Create Payments for Other Companies
base_multi_company	14.0.1.1.1		Provides a base for adding multi-company support to models.
company_dependent_attribute	14.0.1.0.0		Display company dependent attribute on fields
intercompany_shared_contact	14.0.1.1.1		User of each company are contact of a company partner. All child address of a company are automatically shared
mail_multicompany	14.0.0.1.0		Email Gateway Multi company
mail_template_multi_company	14.0.1.0.0		Mail Template Multi Company
partner_contact_company_propagation	14.0.1.0.0		Propagate company info to children contacts
partner_multi_company	14.0.1.0.0		Select individually the partner visibility on each company
product_category_inter_company	14.0.1.0.1		Product categories as company dependent
product_multi_company	14.0.1.0.0		Select individually the product template visibility on each company
product_supplierinfo_group_intercompany	14.0.1.0.1		Add sequence field on grouped pricelist items
product_supplierinfo_intercompany	14.0.1.0.2		Product SupplierInfo Intercompany
product_tax_multicompany_default	14.0.1.0.0		Product Tax Multi Company Default
purchase_quick_intercompany	14.0.0.1.1		Purchase Quick Intercompany
purchase_sale_inter_company	14.0.1.1.0		Intercompany PO/SO rules
res_company_code	14.0.1.0.1		Add 'code' field on company model

This repository is licensed under AGPL-3.0.

However, each module can have a totally different license, as long as they adhere to Odoo Community Association (OCA) policy. Consult each module's __manifest__.py file, which contains a license key that explains its license.

OCA, or the Odoo Community Association, is a nonprofit organization whose mission is to support the collaborative development of Odoo features and promote its widespread use.