U++ : A C++ cross-platform rapid application development suite focused on programmers' productivity without sacrificing runtime performance

U++ is a C++ cross-platform rapid application development suite focused on programmers' productivity without sacrificing runtime performance. Based on strictly deterministic design, it provides a viable alternative to garbage-collected platforms, even for business logic oriented problems.

• Licenses : BSD Revised, LGPL, GPLv2, Public Domain, zlib/libpng
• Operating Systems : POSIX, Linux, Windows, FreeBSD
• Implementation : C++

gtkaml : An XML syntax and an XML parser that extends the Vala

gtkaml is an XML syntax and an XML parser that extends the Vala.Parser and transforms all your XML tags into a valid Gtk+ UI class. It features a compact XML syntax for describing the way Gtk widgets are laid out in a (new) custom widget you're creating. Code "islands" (written in Vala) are used for widget signal handling and other methods/signals/properties that you're introducing. It doesn't depend on an external library at run-time, and it is much more readable than the usual UI boilerplate.

• Licenses : LGPL
• Operating Systems : OS Independent
• Implementation : C, Vala, XML