contribute to the list by commenting additions/changes below
Compilers:
MIPSpro Compiler (C/C++/Fortran/Ada/Pascal) - (comes with IRIX)
GCC (C/C++/Objective-C/Fortran/Ada) - (Nekoware)
TenDRA Compiler (C/C++)
https://en.wikipedia.org/wiki/TenDRA_Compiler
http://www.tendra.org/
https://www.jantar.org/TenDRA/
https://github.com/tendra/tendra
https://web.archive.org/web/19990225143722/http://alph.dera.gov.uk/TenDRA/ (old website w/ more info & links)
PCC-Irix "Portable C Compiler" - The irix repo was lost. ask Raion at irixnet.org if you want to try building it.
Micro Focus COBOL - (commercial, but had a free trial/demo)
ETH Oberon - Oberon programming language compiler
NAGWare f90 Compiler - Full ISO/ANSI standard Fortran 90 compiler
NAGWare f95 Compiler - Full ISO/ANSI standard Fortran 95 compiler (irix support up to f95 Release 5.0)
Release 5.0
https://web.archive.org/web/20061210054512/http://www.nag.co.uk/nagware/np/NP_trial.asp
https://web.archive.org/web/20061009153356/http://www.nag.co.uk/nagware/np/f95_trial/NPSG650NA.tgz
https://web.archive.org/web/20050103213925/http://www.nag.co.uk/doc/inun/np50/sg6na/readme.asp
https://web.archive.org/web/20050103214012/http://www.nag.co.uk/doc/inun/np50/sg6na/licence.asp
https://web.archive.org/web/20061009152831/http://www.nag.co.uk/nagware/np/FLEXlm/sgi32_u6.tgz
https://web.archive.org/web/20061009152308/http://www.nag.co.uk/nagware/np/FLEXlm/sgi64_u6.tgz
https://web.archive.org/web/20061009154017/http://www.nag.co.uk/nagware/np/FLEXlm/sgio32_u6.tgz
Release 4.0a
https://web.archive.org/web/20001210051300/http://www.nag.co.uk/nagware/NP/NP_trial.html
https://web.archive.org/web/2001071...uk/nagware/np/f95_trial/NAGWare_f95-irix5.tgz
https://web.archive.org/web/2002022...k/nagware/NP/f95_trial/NAGWare_f95-irix64.tgz
Interpreters:
Java Development Kit (JDK)
Python - (Nekoware)
Perl - (Nekoware)
BASIC - (natively via IRIXBASIC, otherwise it can run in emulation on DOS/Windows)
Lisp (CLISP) - (Nekoware)
Scheme (MIT Scheme) - (Nekoware)
Tcl/Tk (Tool Command Language) - (Nekoware)
AWK - (Nekoware)
Ruby - might exist (Nekoware)
SICS Swedish ICT AB: Quintus Prolog - Prolog implementation
https://quintus.sics.se/
RISE Research Institutes of Sweden AB: SICStus Prolog 4 - Prolog implementation
https://sicstus.sics.se/
SWI-Prolog - Prolog implementation
https://www.swi-prolog.org/
Code Editors:
Vi - probably exists
Vim - (Nekoware)
Emacs - (Nekoware)
Xemacs - (Nekoware)
NEdit - (Nekoware)
IDEs:
IDDE (Interactive Development Environment) - (comes with IRIX)
SGI's CodeVision - (commercial, but had a free trial/demo)
CodeWarrior - A commercial IDE for C/C++ development (probably exists)
Visual SlickEdit - A commercial IDE that supports multiple languages (probably exists)
Related Tools:
Qt toolkit/API for C++ (Qt-2.3.1 & qt3-3.0.3)
IRIS Inventor / Open Inventor - GL toolkit
Make - (Nekoware)
CMake - might exist (Nekoware)
DBX - C/C++ debugger that comes with the MIPSpro Compiler (probably exists)
GDB (GNU Debugger) - (Nekoware)
CVS (Concurrent Versions System) - (Nekoware)
RCS (Revision Control System) - (Nekoware)
f2c (Fortran 77 to C converter) - (Nekoware)
NAGWare Fortran Tools - commercial w/ 3 packages: f95 Tools, f90 Tools, f77 Tools. (discontinued January 17, 2008)
https://web.archive.org/web/19991012141544/http://nag.com/nagware.html
https://web.archive.org/web/20000520004956/http://nag.com/nagware/nq.asp
https://web.archive.org/web/20080111040109/http://www.nag.com/nagware/NQ.asp
NAGWare Fortran 77 to 90 Converter - A GUI for converting fixed format Fortran 77 to Fortran 90.
https://web.archive.org/web/19991012141544/http://nag.com/nagware.html
NAGWare IRIS Explorer - advanced visual programming environment for 3D visualization & animation
https://web.archive.org/web/20080616192015/http://www.nag.co.uk/Welcome_IEC.asp
Little tree software: Ada Analyzer / Ada Repair, for ADA language, can be integrated with Rational Apex
Possible Items:
Ada Compiler - might exist (GNAT Ada compiler)
Algol Compiler - might exist (Nekoware)
Modula-2 Compiler - might exist (Nekoware)
Prolog Interpreter - might exist (Nekoware)
Unlikely Items:
Absoft Fortran Compiler - ??? very uncertain if it works for irix
PathScale EKOPath Compiler Suite - ??? very uncertain if it works for irix
Simula Compiler (no evidence of existence)
B Compiler (no evidence of existence)
BCPL Compiler (no evidence of existence)
Compilers:
MIPSpro Compiler (C/C++/Fortran/Ada/Pascal) - (comes with IRIX)
GCC (C/C++/Objective-C/Fortran/Ada) - (Nekoware)
TenDRA Compiler (C/C++)
https://en.wikipedia.org/wiki/TenDRA_Compiler
http://www.tendra.org/
https://www.jantar.org/TenDRA/
https://github.com/tendra/tendra
https://web.archive.org/web/19990225143722/http://alph.dera.gov.uk/TenDRA/ (old website w/ more info & links)
PCC-Irix "Portable C Compiler" - The irix repo was lost. ask Raion at irixnet.org if you want to try building it.
Micro Focus COBOL - (commercial, but had a free trial/demo)
ETH Oberon - Oberon programming language compiler
NAGWare f90 Compiler - Full ISO/ANSI standard Fortran 90 compiler
NAGWare f95 Compiler - Full ISO/ANSI standard Fortran 95 compiler (irix support up to f95 Release 5.0)
Release 5.0
https://web.archive.org/web/20061210054512/http://www.nag.co.uk/nagware/np/NP_trial.asp
https://web.archive.org/web/20061009153356/http://www.nag.co.uk/nagware/np/f95_trial/NPSG650NA.tgz
https://web.archive.org/web/20050103213925/http://www.nag.co.uk/doc/inun/np50/sg6na/readme.asp
https://web.archive.org/web/20050103214012/http://www.nag.co.uk/doc/inun/np50/sg6na/licence.asp
https://web.archive.org/web/20061009152831/http://www.nag.co.uk/nagware/np/FLEXlm/sgi32_u6.tgz
https://web.archive.org/web/20061009152308/http://www.nag.co.uk/nagware/np/FLEXlm/sgi64_u6.tgz
https://web.archive.org/web/20061009154017/http://www.nag.co.uk/nagware/np/FLEXlm/sgio32_u6.tgz
Release 4.0a
https://web.archive.org/web/20001210051300/http://www.nag.co.uk/nagware/NP/NP_trial.html
https://web.archive.org/web/2001071...uk/nagware/np/f95_trial/NAGWare_f95-irix5.tgz
https://web.archive.org/web/2002022...k/nagware/NP/f95_trial/NAGWare_f95-irix64.tgz
Interpreters:
Java Development Kit (JDK)
Python - (Nekoware)
Perl - (Nekoware)
BASIC - (natively via IRIXBASIC, otherwise it can run in emulation on DOS/Windows)
Lisp (CLISP) - (Nekoware)
Scheme (MIT Scheme) - (Nekoware)
Tcl/Tk (Tool Command Language) - (Nekoware)
AWK - (Nekoware)
Ruby - might exist (Nekoware)
SICS Swedish ICT AB: Quintus Prolog - Prolog implementation
https://quintus.sics.se/
RISE Research Institutes of Sweden AB: SICStus Prolog 4 - Prolog implementation
https://sicstus.sics.se/
SWI-Prolog - Prolog implementation
https://www.swi-prolog.org/
Code Editors:
Vi - probably exists
Vim - (Nekoware)
Emacs - (Nekoware)
Xemacs - (Nekoware)
NEdit - (Nekoware)
IDEs:
IDDE (Interactive Development Environment) - (comes with IRIX)
SGI's CodeVision - (commercial, but had a free trial/demo)
CodeWarrior - A commercial IDE for C/C++ development (probably exists)
Visual SlickEdit - A commercial IDE that supports multiple languages (probably exists)
Related Tools:
Qt toolkit/API for C++ (Qt-2.3.1 & qt3-3.0.3)
IRIS Inventor / Open Inventor - GL toolkit
Make - (Nekoware)
CMake - might exist (Nekoware)
DBX - C/C++ debugger that comes with the MIPSpro Compiler (probably exists)
GDB (GNU Debugger) - (Nekoware)
CVS (Concurrent Versions System) - (Nekoware)
RCS (Revision Control System) - (Nekoware)
f2c (Fortran 77 to C converter) - (Nekoware)
NAGWare Fortran Tools - commercial w/ 3 packages: f95 Tools, f90 Tools, f77 Tools. (discontinued January 17, 2008)
https://web.archive.org/web/19991012141544/http://nag.com/nagware.html
https://web.archive.org/web/20000520004956/http://nag.com/nagware/nq.asp
https://web.archive.org/web/20080111040109/http://www.nag.com/nagware/NQ.asp
NAGWare Fortran 77 to 90 Converter - A GUI for converting fixed format Fortran 77 to Fortran 90.
https://web.archive.org/web/19991012141544/http://nag.com/nagware.html
NAGWare IRIS Explorer - advanced visual programming environment for 3D visualization & animation
https://web.archive.org/web/20080616192015/http://www.nag.co.uk/Welcome_IEC.asp
Little tree software: Ada Analyzer / Ada Repair, for ADA language, can be integrated with Rational Apex
Possible Items:
Ada Compiler - might exist (GNAT Ada compiler)
Algol Compiler - might exist (Nekoware)
Modula-2 Compiler - might exist (Nekoware)
Prolog Interpreter - might exist (Nekoware)
Unlikely Items:
Absoft Fortran Compiler - ??? very uncertain if it works for irix
PathScale EKOPath Compiler Suite - ??? very uncertain if it works for irix
Simula Compiler (no evidence of existence)
B Compiler (no evidence of existence)
BCPL Compiler (no evidence of existence)
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