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Qt Editions

The Qt Professional and Enterprise Editions are the commercial versions of Qt.

Qt Open Source Edition is the non-commercial version of Qt. It is freely available for download.

You may write commercial/proprietary/non-free software only if you have purchased the Professional or Enterprise Edition. With these commercial editions, you also get technical support and upgrades. Qt for Microsoft Windows is only available as Professional and Enterprise Editions.

Professional/Enterprise Comparison Chart Professional Enterprise
Qt Base Modules (Tools, Kernel, Widgets, Dialogs)
The platform-independent Qt GUI toolkit and utility classes
X X
Qt Designer
Visual Qt GUI builder
X X
Iconview module
Visualization of sets of pixmaps with user interaction.
X X
Workspace module
Multiple Document Interface (MDI) support
X X
OpenGL 3D Graphics module
Integration of Qt with OpenGL

X
Network module
Platform-independent classes for sockets, TCP, FTP and asynchronous DNS lookup.

X
Canvas module
Optimized 2D graphics area for visualization, diagrams, etc.

X
Table module
Flexible and editable table / spreadsheet

X
XML module
Well-formed XML parser with SAX interface and DOM Level 1.

X
ActiveQt extension
Support for building and hosting ActiveX controls on Windows.

X
QMotif extension
Motif co-existence and migration support.

X


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Qt 3.3.8