XAMPP - XAMPP is a free and open-source cross-platform web server that is primarily used when locally developing web applications.
Avalara - Cut tax compliance costs, not corners. Avalara automates tax compliance and can help improve accuracy while reducing costs.
Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
Thomson Reuters ONESOURCE - ONESOURCE tax software and solutions synchronize every aspect of your work and link international, country, state and local tax laws.