Estos is a software vendor specializing in unified communications and collaboration solutions. The company offers a range of products that enhance communication and productivity in businesses, including solutions for voice over IP (VoIP), presence management, and integration with various telephony systems. Estos focuses on providing tools that facilitate seamless communication across different platforms and devices, catering to both small and medium-sized enterprises as well as larger organizations. Their offerings often include features such as call management, instant messaging, and video conferencing, aimed at improving organizational efficiency and connectivity.