GTK+ is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK+ is suitable for projects ranging from small one-off projects to complete application suites.

GTK+ is free software and part of the GNU Project. However, the licensing terms for GTK+, the GNU LGPL, allow it to be used by all developers, including those developing proprietary software, without any license fees or royalties.

GTK+ has been designed from the ground up to support a range of languages, not only C/C++. Using GTK+ from languages such as Perl and Python (especially in combination with the Glade GUI builder) provides an effective method of rapid application development.

Download GTK+ 2 Runtime Environment 2.12.9-1 in Softonic

Checking your CSS can be a real pain, if you don't have the proper tools. Free CSS Toolbox gives you the essentials to take care of the job in seconds. After having tested it we concluded that it had all the tools you would really need, like automatic check, reformat and the most important, validation of CSS. All you have to do is paste or open your code in Free CSS Toolbox to get working on it. We also liked the compress tool, which reduces your CSS to the max, ridding it of unnecessary code. The program also features all the shorthand properties you need, like borders, background or padding.

Free CSS Toolbox is not an extremely advanced application, but it'll cater to those looking for a no-fuss add. Even they're discreet, we were a bit annoyed by the ads for other apps like Rapid CSS editor. On the whole though, Free CSS Toolbox is a simple program to quickly correct your CSS and best of all, it's free.

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Mesa is a good open source solution to render 3D interactive graphics. The Mesa 3D library can be compiled on virtually all modern platforms or as a software-only renderer. You can also change its internal limits for special needs. Mesa is appreciated by users for its versatility and easy implementation.

Download Mesa 3D Graphics Library 7.0 in Softonic

SkinCrafter Installer is a developer tool that performs a fresh idea in the sphere of GUI skinning. It's available for everyone who wants to be unique, express individuality and create corporate identity. The great variety of skins accessible at our Skin Gallery makes very exciting. New skins are submitted and updated there regularly in order to suit the different tastes of different users.

Various skins make your installer look much more professional. You are welcome to apply any skin you want or use any skin created by SkinBuilder. A specially developed tutorial will help you to create your own skin and add it to your own Installer program. You can also make it accessible to all users presenting your new created skin at our Skin Gallery.

Download SkinCrafter 2.5.1 in Softonic

A collection of freely available and freely distributable Windows specific header files and import libraries combined with GNU toolsets that allow one to produce native Windows programs that do not rely on any 3rd-party C runtime DLLs.

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It provides similar functionality as of strace on Linux. It can trace all the calls made by a process to the imported functions from a DLL. StraceNT can be very useful in debugging and analyzing the internal working of a program. StraceNT uses IAT patching technique to trace function calls, which is quite reliable and very efficient way for tracing. It also supports filtering based on DLL name and function name and gives you a lot of control on which calls to trace and helps you to easily isolate a problem.

Download StraceNT 0.8 in Softonic