Description:

Code::Blocks is a free C++ IDE built specifically to meet the most
demanding needs of its users. It was designed, right from the start,
to be extensible and configurable.
Built around a plugin framework, Code::Blocks can be extended with
plugin DLLs. It includes a plugin wizard so you can compile your own plugins!

Features:

Highlights:

* Open Source! GPL2, no hidden costs.
* Cross-platform. Runs on Linux or Windows (uses wxWidgets).
* Made in GNU C++. No interpreted languages or proprietary libs needed.
* Comes in two presentations: Standalone, and MinGW bundle
* Devpack support (optional)
* Extensible thru plugins (SDK available in the downloads section)

Compiler-related features:

* Multiple compiler support:
o GCC (MingW / Linux GCC)
o MSVC++
o Digital Mars
o Borland C++ 5.5
o Open Watcom
* Compiles directly or with makefiles
* Predefined project templates
* Custom template support
* Uses XML format for project files.
* Multi-target projects
* Workspaces support
* Imports MSVC projects and workspaces
(NOTE: assembly code and inter-project dependencies not supported yet)
* Imports Dev-C++ projects
* Integrates with GDB for debugging

Interface Features:

* Syntax highlighting, customizable and extensible
* Code folding for C++ and XML files.
* Tabbed interface
* Code completion plugin
* Class Browser
* Smart indent
* One-key swap between .h and .c/.cpp files
* Open files list for quick switching between files (optional)
* External customizable "Tools"
* To-do list management with different users