Manage your tenants.
This module allows you to manage the tenants of your ABP project.
You can create, edit, update and list your tenants.
You can set a custom DB connection string to a tenant.
You can set a password/email for the tenant admin user.
You can manage the features of a tenant.
Check out the package details abp.io/package-detail/Volo.Abp.TenantManagement.Application.
This module is free and open source. The source-code is available at github.com/abpframework/abp/tree/dev/modules/tenant-management.
You can see the Multi-Tenancy document.