Qt

Qt 4.8

Free
Allows you to write advanced applications and UIs once
4.0  (5 votes)
2.1
5.7.0 (See all)

Qt is a powerful and easy-to-use application that allows you to write advanced applications and UIs once, and deploy them across desktop and embedded operating systems without rewriting the source code saving time and development cost. Nonetheless, this is a great application that I strongly recommend.

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