Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
flyceipts - A fresh look at digital receipts & other documents.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Keep Your Friends Close - A free e-book about maximizing Customer Lifetime Value
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.
Ramp Receipts - Create a receipts/invoice dashboard for Stripe