Thincast RD WebServices is a software suite from Thincast Technologies GmbH for secure access to Remote Desktop Protocol (RDP) servers. RD Gateway is an SSL-based RDP proxy that exposes only port 443 and hides the remote desktop servers from the internet. RD WebAccess distributes signable .rdp files and RD WebClient opens apps and desktops in an HTML5 browser. The RD AdvancedSecurity add-on provides GeoIP and brute-force protection, time-controlled logons and automatic certificates (ACME). Two-factor authentication works through the Thincast Authenticator app. The components run on Windows and Linux and integrate with Active Directory.
Thincast Technologies GmbH is based in Mödling, Austria; its website names no parent company. The software is meant to be installed on your own servers, so you decide where connections run and data is processed. The product pages say nothing about telemetry or a hosting location, so ask the vendor. The company contributes to the separate open-source project FreeRDP; whether RD WebServices itself is open source is not stated. The suite is an alternative to Microsoft's Remote Desktop roles, without the restriction to Windows.