Homework On Web - Live Online tutoring
Thomson Reuters ONESOURCE - ONESOURCE tax software and solutions synchronize every aspect of your work and link international, country, state and local tax laws.
Learnetto - Learnetto is a place to learn how to make web and mobile apps.
Avalara - Cut tax compliance costs, not corners. Avalara automates tax compliance and can help improve accuracy while reducing costs.
Math42 - Formula calculator for IOS
TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.