Code::Blocks

If you're in need of a robust, free C++ IDE, Code::Blocks is well worth considering. This project was built from the ground up to be both extensible and configurable, utilizing a plugin framework that lets you import plugin DLLs to expand your development environment. And if you're interested in creating your own plugins, Code::Blocks even includes a plugin wizard to help streamline the process (note that the free SDK will need to be downloaded separately).

One of the standout features of Code::Blocks is its cross-platform support. Whatever your OS of choice, you'll likely be able to take advantage of Code::Blocks' capabilities, as long as you have access to the free wxWidgets library. This IDE is available in both Standalone and MinGW bundle presentations, with support for multiple compilers (GCC, MSVC++, Digital Mars, Borland C++ 5.5, and Open Watcom) and the ability to compile projects directly or with makefiles.

You'll find plenty of built-in support for various project types, as well as the ability to create custom templates to streamline your workflow. And when it comes time to debug your code, you'll appreciate Code::Blocks' seamless integration with GDB.

The IDE's customizable syntax highlighting and customizable code folding features make it easy to stay organized and efficient, while the Tabbed interface and One-key swap make it quick and intuitive to jump between different files. Code completion plugin, Class Browser, and Smart indent features all help streamline your coding experience.

Overall, Code::Blocks is an impressive free IDE that's absolutely packed with features, making it a popular choice among developers in need of a versatile, extensible environment for their C++ projects. Recent bug fixes and improvements assure a better experience for users.