Code::Blocks is a free, open-source, cross-platform C, C and Fortran IDE built to meet the most demanding needs of its users. It is designed to be very extensible and fully configurable. How to Download And Install CodeBlocks ON Mac FREE Download BEST METHOD Its Damn Clear from the TItle! JUST DOWNLOAD IT AND ENJOY -. Code::Blocks is a free C IDE built to meet the most demanding needs of its users. It is designed to be very extensible and fully configurable. An IDE with all the features a developer need, having a consistent look, feel and operation across platforms. Built around a plugin framework, Code::Blocks.