Rack-Soft is an innovative software vendor specialized in applications that run on computer clouds. The company provides under 4PSA brand solutions that help Service Providers and enterprises manage their IT infrastructure, automate processes, and improve communications.

The flagship solution is VoipNow Platform, a set of software applications designed to accelerate Unified Communications adoption by businesses and end-users. The products are built around cloud computing concepts and provide unrivaled features, scalability, and automation. Rack-Soft's success is based on excellence, innovation, and customer oriented processes.

The company's business philosophy is based on an ISO 9001:2008 quality management system certified by TÜV CERT.