[3][4] It supports the OpenMP[5] multi-platform shared memory multiprocessing, up to its latest version (4.5).

[8] Since GCC version 4.0.0, released in April 2005,[9] GFortran has replaced the older g77 compiler.

The new Fortran front-end for GCC was rewritten from scratch,[10] after the principal author and maintainer of g77, Craig Burley, decided in 2001 to stop working on the g77 front end.

The two codebases have "significantly diverged" according to GCC developers,[12] and g95 has not been maintained since 2013.

Since 2010 the front-end, like the rest of the GCC project, has been migrated to C++, where it was previously written in C.[13] Development of the compiler by volunteer users continues[14] and each new version of GCC incorporates better support for the latest language standards and bug fixes.