In 1990, Zinc Software released its first software development package, Zinc Interface Library, as a tool for
Borland Turbo C++. This package allowed creation of text and graphics-based user interface, initially only for DOS applications and, since the 2.0 release, also for Windows programs. In 1994, Zinc Software introduced version 4.0 of its C++ tool under Zinc Application Framework name. Zinc aimed at cross-platform development of the user interface supporting DOS, Windows, Mac and Unix. With the release of the version 5 in 1997, Zinc Software changed its pricing policy and distributed the "Personal Version" of the Zinc Application Framework free of charge for non-commercial use — including source code and limited only by lack of technical support and distribution rights. Zinc Software was acquired in 1998 by Wind River and continued to operate as a subsidiary. In 2004, Zinc Software was sold to Professional Software Associates (PSA). ==References==