Fortran

• ISO/IEC JTC1/SC22/WG5 (‘The Home of Fortran Standards’). Includes information about the standards, from prehistory to the current Fortran 2018 and the future Fortran 202x. The standards themselves must be purchased, but some draft documents, corrigenda and lists of changes are available on the site (e.g., drafts for Fortran 95, 2003 and 2008).
• Status of Fortran 2018 as of 2018 Jun 23.
• Fortran 202X survey results and initial recommendations
• Advantages of Fortran by J. Prentice
• comp.lang.fortran at Google
• Fortran forum at ObjectMix.com
• gfortran and g95 (the relationship between these two is murky; apparently both are now GPL; ref.)
• Visual Fortran: used for compiling Windows versions of AudiLab software; we have 1 copy
• IDE's: Photran (based on Eclipse), Code::Blocks for Fortran; see Comparison of IDE's (targeted at C/C++); Setting up Photran with g95
• Fortran Wiki, including list of Fortran libraries and much else
• Documentation systems: FORD is ’an automatic documentation generator for modern Fortran programs’. I haven't tried it yet. It doesn't handle old-style fixed-form Fortran code. Its author mentions and comments on these alternatives: Doxygen (well known but doesn't work well with Fortran); ROBODoc (doesn't extract information from the source code itself); and f90doc (produces ugly output without many links).
• JSON libraries for Fortran include json-fortran and YAJL-Fort. I haven't tried them.
• The Fortran Company (Arizona)
• Fortranplus by Ian Chivers and Jane Sleightholme (formerly Fortran 90, 95 and 2003 site at King's College London)
• Netlib mathematical software
• Gary Scott's Fortran Library
• ACM SIGPLAN Fortran Forum at ACM Portal
• Fortran 90 for the Fortran 77 Programmer by Einarsson & Shokin
• H. D. Knoble's Fortran Resources and Fortran 77/90/95 Compilers
• Jeff Templon's Linux Fortran Information Page
• Donald Gudehus' MIIPS (image processing, plotting, student-grades management, astronomy)
• Compaq Visual Fortran: A Guide to Creating Windows Applications by Norman Lawrence
• Fortran 90/95 Explained, Second Edition by Michael Metcalf and John Reid
• Errata and corrections for Stephen Chapman's Fortran 90/95 for Scientists and Engineers (McGraw-Hill, 1998) [a 2nd edition of this book is now available, although I couldn't find information about it on the very annoying McGraw-Hill Web site]

My notes

• One cannot have an ALLOCATABLE array in a COMMON.