Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

Bill.com - Bill.com provides ACH payments processing, automates your accounts payable and accounts receivable processes.

Zendesk - Zendesk is a beautiful, lightweight help-desk solution.

YayPay - YayPay is AI to accelerate cash flow and automate accounts receivables.

Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community

InvoiceSherpa - Invoice Sherpa is a simple invoice reminder and integrated payments systems that works with most accounting solutions.