32-bit Windows console application to assist in the reverse engineering of Fortran 77 programs. Caller generates call trees and variable lists. The output is in either text or HTML for easy linked navigation. Caller can optionally annotate the call tree with comment information (eg 'description') from the original source file.

FortranLint source code analysis tool simplifies the debugging and maintenance of code by identifying common problems that typically pass through a compiler. Grayboxx is a cross-platform software test automation system.

Tools for parallelization and conversion of Fortran 77 to Fortran 90: generation of new source form, removal of obsolete features, elimination or reduction of GOTOs and labels, generation of array syntax in place of loops. creation of MODULEs from COMMONs, and automatic generation of interface blocks.

Simple diagrammer for Fortran programs, by Mitchell R. Grunes.

Source code checker for Fortran 77, written in Perl, by Tsuguhiro Tamaribuchi.

Software tool that takes as input a file of Fortran 77 code and checks it according to various "coding conventions". Floppy can "tidy" the source Fortran, producing a new file with indented DO-loops, block IF's, and so on. Floppy can be used to generate HTML from the Fortran program.

Statically analyzes Fortran 66/77/90/95 code for syntax and semantic errors. Produces documentation like cross-references and call-tree. Validates for cross-platform conformance. [Commercial]

Fortran 77/90/95 code analysis and reengineering.

Flowcharting utility.

Finds "cold-spots" in Fortran codes (the part of the codes that are never executed), and flags these parts line-by-line. Finds "hot-spot" in Fortran codes (the part of the codes that are most frequently executed), and gives a line by line profile. Designed to working mainly with Fortran 90 and 95, but also works with fixed format code, and thus Fortran 77. [Free]

FFT builds an internal representation of the function call hierarchy relations in Fortran 77 code. Several features and options allow the user to customize the generated hierarchy tree chart output and to get a large set of useful information about the source code. The results can be stored in a database and recalled later. The recall utility can be integrated into editors like BRIEF or MicroEMACS (DOS, Windows) and provides a hypertext-like feeling for function locating. The output calltree can be generated as HTML- and as RTF-file (Windows Help).

Produces compile-time diagnostics of Fortran code using the Lahey/Fujitsu Fortran 95, Lahey Fortran 90, or Essential Lahey Fortran 90 compilers. Can show warnings, perform a Fortran 90/95 conformance check, warn about use of obsolescent features, force implicit none, and show source listing and cross reference. Runs online, for free.

Software to help developers navigate source code written in Fortran 77, Fortran 90 and C. Source code is transformed into HTML for browsing.

Static analyzer for Fortran 77 designed to detect certain errors that a compiler usually does not. [Free]

Tools to analyse and transform Fortran 77, Fortran 90 and Fortran 95 code.

Checks syntax of Fortran 77 or 95 code online.

Converts a Fortran 77 source code to its flowchart equivalent, which is then ported into an Excel file.

OmegaChart 3.1 is a Fortran FlowChart generator. This package converts a Fortran source code (f77 and f90, fixed or free form) to its FlowChart equivalent. The generated flowchart is viewable through Microsoft Excel or Microsoft Internet Explorer. OmegaMath is a specialized module of OmegaChart, which is capable of performing statement-level analysis of Fortran source code.

Product from Polyedron for Fortran source code restructuring, global static analysis, coverage analysis, automated make, and version selection.

Software to clean up Fortran 77 code. Highly configurable Fortran program to indent and renumber statements, selectively change case of keywords or non-keywords, and do various other clean-up tasks on FORTRAN 77 source programs. TIDY can convert some FORTRAN 66 features such as Hollerith constants to FORTRAN 77. TIDY can either retain DO/END DO loops or convert them to standard FORTRAN 77 loops. It can change comment specifiers from C,c,or * to ! as in Fortran 90 (F90) style. Supports F90 CYCLE, EXIT, DO WHILE loops, IMPLICIT NONE, INCLUDE statements, long variable names, relational operators in symbolic form such as == and /=, and the use of underscores in variable names.

Interactive development environment tool providing reverse engineering, automatic documentation, metrics and cross referencing of Fortran source code. It supports the Fortran 77 and 90 language standards, with common VAX, Cray and Salford extensions. [Shareware]

Static typechecker that works on Fortran source code to find algebraic inconsistencies.

Tool for testing, quality assurance, migration and re-engineering of Fortran programs. WinFPT is a full GUI-based implementation of FPT for Win32.