Lately I have tried to find an IDE for my intel Fortran compiler.
I was amazed by the lack of them or how undeveloped are for Fortran.
First one that I have tried was Photran (a plugin for eclipse). Nice and free. http://www.eclipse.org/photran/
It seems that Kdevelop and Anjuta (tools which come with kde respectively gnome) support Fortran projects but I have to admit I was not very impressed. (they are also free).
Next one that I have tried was C-Forge from Code Forge http://www.codeforge.com/ . This one is a commercial one (the bad part). The good part is that they offer academic licenses for less than 100 US dollars.
I hope that that these will help you and save some time.
If you know other tools available please post them.