FileInvite - Stop chasing your clients for documents! Easily request files, documents, forms & signatures from your clients – set a due date and save hours as your requests are returned to you effortlessly.

BillGrid.com - BillGrid is an easy to use online invoicing, billing and expense management system that will save you time with tracking clients projects, expenses, invoices and payments.

Clinked - White-label Client and Team Workspace

ChargeOver - ChargeOver automates recurring billing, subscription billing, & payment acceptance. A SaaS that integrates with Xero, Quickbooks, & has an API. Free trial.

iDeals Virtual Data Room - iDeals Virtual Data Room is a tool that provides secure access to large amount of confidential documents and can view, analyze and collaborate in a protected environment.

Elorus - A super-easy online invoicing & time tracking software