Releases

Four solver binaries (steady, batch, dynamic + control, properties), 49 unit-operation models, a curated thermodynamic catalogue (247 components, 205 Henry pairs, Pitzer and electrolyte-NRTL sets), 288 runnable tutorials, and the three-level conservation discipline — mass, per-element atoms and energy — with the element balance emitted by default on every converged steady run. Runs natively (C++17, zero dependencies) and in the browser via WebAssembly.

The app at choupo.org/app runs this line by default — a browser app has no install, so visitors get the newest Choupo, clearly badged Choupo-dev · <commit> in the top bar. No stability promises: cases, results and interfaces may shift between commits; cite and teach from the frozen stable release above.

A moving branch is not a citable object — cite the versioned release you actually used:

Geraldes, V. (2026). Choupo: Open-source Chemical Process Simulator
(Version 2607) [Computer software].
https://github.com/choupo-admin/choupo/releases/tag/v2607