Fortran compiler options for beginners include g95 and gfortran, both of which are free and available across multiple platforms. g95, developed by Andy Vaught, is noted for its strict adherence to language standards, ensuring compatibility with other compilers. Installation is generally straightforward on Windows, with g95 and gfortran being easy to set up, though gfortran may have compatibility issues on some Windows versions. The Salford Personal Edition is another option for Windows, offering a user-friendly IDE but with a delay for free version notifications. For macOS, gfortran and g95 are recommended, while Intel's demo version is available but may require complex configuration. On Linux, gfortran and g95 are also easy to install, with Intel offering a demo and a long-term free version that can be found with some effort.