Oracle Secure Global Desktop (SGD) software provides secure access to both published applications and published desktops running on Microsoft Windows, Unix, mainframe and IBM i systems via a variety of clients ranging from fat PCs to thin clients such as Sun Rays. History In 1993 the Santa Cruz Operation (SCO, later Tarantella, Inc.) acquired IXI Limited, a software company in Cambridge, UK, best known for its X.desktop product. In 1994 it then bought Visionware, of Leeds, UK, developers of XVision. In 1995 the development teams from IXI and Visionware were combined to form IXI Visionware, later the Client Integration Division of SCO. A development team within this division began work in 1996 on a project codenamed Tarantella. The goal of this project was "any application, any client, anywhere": access to applications of any type (hosted on back-end servers) from any client device that supported a Java-enabled web browser. The project codename stuck: it became the final product name. The first public release of Tarantella software was in November 1997. Later version 1.x releases supported more application types (such as Microsoft Windows applications) and client types (including Native Clients to remove the dependency on Java support), and added scalability and security features to better support larger enterprises and secure application access over the Internet. The product was renamed Tarantella Enterprise II in late 1999, with a cut-down Tarantella Express product available on Linux systems. This renaming was a simple rebrand of the then-current 1.x release: no version 2.x software was released. In November 2000 version 3.0 of the product was released, including a major rewrite of much server-side code in the Java language. The product was rebranded as Tarantella Enterprise 3, with releases for Linux and major UNIX systems. Further 3.x releases followed in subsequent years, adding more integration features in competition with similar software from Citrix. Sun Microsystems acquired Tarantella, Inc. in July 2005. The product underwent massive development in the following years. As of April 2021, the current version is Oracle Secure Global Desktop 5.6.535. Overview SGD is considered by industry insiders to be a competitor to Citrix's products for remote application delivery. A large range of client devices can connect to a Secure Global Desktop Server, including Microsoft Windows PCs, Solaris desktops, Apple Macintoshes, Linux PCs, thin clients such as those from Sun and Wyse, and mobile devices. The client requires only a web browser with a Java