TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
Clio - Clio provides a full suite of web-based practice management tools targeted specifically at the administrative needs of sole practitioners and small firms.
Vertex Cloud - Vertex Cloud offers sales and use tax automation solutions.
MyCase - Practice More, Manage Less.
Thomson Reuters ONESOURCE - ONESOURCE tax software and solutions synchronize every aspect of your work and link international, country, state and local tax laws.
PracticePanther - PracticePanther offers CRM, invoicing, time tracking and communication solutions for law firms.