September 15, 2007, the EuroScope ATC client was approved for use on the VATSIM network. Created by Gergely Csernák, the client is reported to be the most used ATC client on VATSIM, due to its custom plugin support, realistic radar screens, and automatic controller coordination. It is designed to integrate with other ATC clients like VRC, , and vERAM, however. It is generally used mostly in the Europe and Asia regions. On January 14, 2012, the ATC client was approved for use on the VATSIM network. Also created by Ross Carlson, the client aims to replicate the real-world STARS system used in many US TRACON facilities. On February 27, 2016, the vERAM ATC client was approved for use on the VATSIM network. Also created by Ross Carlson, the client aims to replicate the real-world ERAM system used in many US ARTCC facilities. On July 18, 2020, the vatSys ATC client was approved for use on the VATSIM network. Created by Jake Saw, the client aimed to replicate the real-word TAAATS system used in Australia, but is now modelled off the Eurocat/TopSky systems. It features an advanced profiling system which "means that the look and feel of the client can be adjusted with a simple few clicks". Audio for VATSIM From its inception, VATSIM employed a system consisting of voice 'rooms', in which, by using custom-written TeamSpeak 2 servers as a backbone, each virtual 'frequency' functioned similarly to a VoIP conference call, and a controller needed to 'open' each room in order for voice communications to be possible on the corresponding frequency. In October 2019, VATSIM had finished a complete overhaul of its voice system and called it Audio for VATSIM, a key feature of which is simulation of the entire VHF radio range, thus eliminating the need for voice rooms. The system realistically simulates signal degradation, audio quality, transceiver operation, frequency cross-coupling, and altitude effects. Microsoft partnership On July 23, 2020, VATSIM, alongside announcing a complete overhaul of their branding, announced that they had entered into a partnership with Microsoft, to ensure that the desktop PC version of Microsoft Flight Simulator 2020 would be compatible with VATSIM upon launch. However, VATSIM does not and likely never will support the Xbox version of Microsoft Flight Simulator 2020. VATSIM Velocity On March 13, 2021, VATSIM announced a closed-beta initiative to test low latency position updates on the network, named VATSIM Velocity. With