CiviCRM - A Constituent relationship management for the Civic Sector
YayPay - YayPay is AI to accelerate cash flow and automate accounts receivables.
Odoo CRM - Open Source CRM
Bill.com - Bill.com provides ACH payments processing, automates your accounts payable and accounts receivable processes.
Pipeliner CRM - Pipeliner CRM empowers small to medium-sized sales teams to close more deals and lower risk. Implementation and training are a breeze. Mac & Windows.
Invoiced - Invoiced is simple invoicing for freelancers and small businesses.