Evolving Systems offers software for the ever-evolving telecommunications industry. The company provides applications used by telecom companies to automate and manage parts of their network operations, including tools applications that allow users to route calls and messages to various devices. The company also provides local number portability software that allows telephone customers to keep the same phone number when changing to a new carrier. Evolving Systems has expanded its international operations in Africa, Asia, and Central America and added products for managing SIM cards. The company agreed to sell its number management and monitoring assets to NeuStar in 2011 for $39 million.