Simply Fortran
Simply Fortran is a free software for optimizing the performance of numerical analysis with Fortran 95 programming language. Simply Fortran is ideal for scientific and engineering numerical applications requiring high numerical sophistication and expression capability. It was developed by a joint research effort of the U.S. National Institute of Mathematics (NIMA), the United States Department of Energy (DOE), and the National Academy of Sciences (NAS). Simply Fortran was initially released for the IBM Model M line of computers and is now rapidly gaining in popularity with other brands of computers.
Simply Fortran is a user-friendly professional quality integrated development environment, which can be used to develop both object and executable applications. Simply Fortran supports many different modules, code, and generic components. Fortran fixed-format code is thus treated as a first class language in the editor of Simply Fortran. Furthermore, Simply Fortran has included an integrated development environment that comes included with the software.
In summary, Simply Fortran is an easy to use professional quality integrated development environment (IDE) with powerful features for numerical analysis and simulation, analysis and exploration, graphing, statistical computing, optimization, tracing, integration with databases, and much more. The developers claim that they have taken every important feature available and improved upon it. It is available in both Microsoft Windows and Linux flavors. For those people who would like to try out the Simply Fortran package, you can download it from their website for free. As for those who want to install the program on their own systems, they can find it in many popular marketplaces, such as liveware.