This is a list of notable library packages implementing a graphical user interface (GUI) platform-independent GUI library (PIGUI). These can be used to develop software that can be ported to multiple computing platforms with no change to its source code. In C, C++ In other languages No longer available or supported See also List of widget toolkits List of rich web application frameworks Further reading Richard Chimera, Evaluation of Platform Independent User Interface Builders, March 1993, Human-Computer Interaction Laboratory University of Maryland Computer libraries Cross-platform software