Avalara, Inc. is a privately held company with headquarters on Bainbridge Island, WA developing cloud-based sales tax and compliance systems. Founded in 2004, Avalara is one of six Certified Service Provider available to retailers.

Postmark is a transactional email service that provides reliable email delivery for businesses and applications. It specializes in sending transactional and notification emails with high deliverability rates.

Splitwise is a mobile and web application designed to simplify the process of sharing expenses among friends, roommates, or groups. It allows users to easily track and split bills, calculate debts, and settle up through various payment methods.