Vertex 

Vertex, Inc. provides tax technology solutions for corporations in retail, communication, leasing, and manufacturing industries in the United States and internationally. It offers tax determination, compliance and reporting, tax data management, document management, pre-built integration, and industry-specific solutions. The company sells its software products through software license and software as a service subscriptions. It also provides implementation and training services in connection with its software license and cloud subscriptions, transaction tax returns outsourcing, and other tax-related services. Vertex, Inc. was founded in 1978 and is headquartered in King of Prussia, Pennsylvania.