# All the marine carbonate system software

**URL:** <https://systemco2.net/t/all-the-marine-carbonate-system-software/16>\
**Category:** Help, research and resources\
**Created:** [19 March 2026 11:04 UTC](https://systemco2.net/t/all-the-marine-carbonate-system-software/16 "2026-03-19T11:04:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mvdh](https://systemco2.net/user_avatar/systemco2.net/mvdh/32/17_2.png) [@mvdh](https://systemco2.net/u/mvdh)\
**Post date:** [19 March 2026 11:04 UTC](https://systemco2.net/t/all-the-marine-carbonate-system-software/16/1 "2026-03-19T11:04:36Z")

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Let’s try to make a list of all the different software tools out there, ideally with links to the software (including different versions), documentation, and the people who (have) develop(ed) it when they are members of this forum.

**Please reply to this topic** with any additions (missing tools or extra info about the ones already mentioned) and identify yourself if you are a developer or advanced user of any particular tool(s) - I’ll keep updating this first post as new information comes in.

# Excel

### CO2SYS-Excel

* * *

# Fortran

### mocsy

Developer: @orr

Code on GitHub: [jamesorr/mocsy](https://github.com/jamesorr/mocsy)

* * *

# Julia

### CarbonateCalculator.jl

Developer: @Sophie_Elam

Code on GitHub: [sophieelam/CarbonateCalculator.jl](https://github.com/sophieelam/CarbonateCalculator.jl)

### CO2System.jl

CO2System.jl is a bare-minimum port of CO2SYS-MATLAB v2.0.5 into Julia. It’s not being actively maintained.

Developer: @mvdh

Code on GitHub: [mvdh7/CO2System.jl](https://github.com/mvdh7/CO2System.jl)

* * *

# MATLAB / GNU Octave

### CO2SYS-MATLAB

Active developers: @jdsharp  
Other contributors: @mvdh, @orr

Code:

- v3: [jonathansharp/CO2-System-Extd](https://github.com/jonathansharp/CO2-System-Extd)
- v2: [jamesorr/CO2SYS-MATLAB](https://github.com/jamesorr/CO2SYS-MATLAB)

* * *

# MS-DOS

### CO2SYS-MS-DOS

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# Python

### CBSyst

Active developers: @OscarBranson

Code on GitHub: [oscarbranson/cbsyst](https://github.com/oscarbranson/cbsyst)

### PyCO2SYS (Python)

Active developers: @mvdh  
Other contributors: @Daniel_Sandborn, @mmartinmayor, @luke.gregor

Code on GitHub: [mvdh7/PyCO2SYS](https://github.com/mvdh7/PyCO2SYS)

- Version 1

- Version 2 (in public beta testing)

* * *

# R

### seacarb

Active developers: @orr  
Past developers: @Gattuso

Package on CRAN: [Package seacarb](https://cran.r-project.org/web/packages/seacarb/index.html)

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<div class="post-metadata">

**Author:** ![mvdh](https://systemco2.net/user_avatar/systemco2.net/mvdh/32/17_2.png) [@mvdh](https://systemco2.net/u/mvdh)\
**Post date:** [19 March 2026 11:04 UTC](https://systemco2.net/t/all-the-marine-carbonate-system-software/16/2 "2026-03-19T11:04:56Z")

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