A hydrological modelling platform for the people.
An open-source platform designed for modern workflows. Get started here.
Latest release v0.3.5 · macOS, Windows & Linux · Changelog ↗
Capabilities
What Kalix does
Plain-text models
INI files you can diff, review and version in Git — editable by hand or in the IDE.
Visual network editor
See the whole catchment as a node graph and edit the schematic and text side by side.
Commandline & Python
Run headless in CI, batch scenarios, or drive Kalix from a notebook via Python bindings.
Optimisation built in
Calibrate with SCE, CMA-ES, Differential Evolution and DREAM against your objective functions.
Rainfall-runoff models
Proven conceptual models including GR4J and Sacramento, ready to wire into any node.
Fast Rust core
Century-long daily simulations over hundreds of nodes, run in seconds.
Timestep agnostic
Simulate at any constant timestep — daily for most work, down to sub-daily like 15 minutes when a project calls for it.