Curated stacks
Collections
Opinionated, hand-assembled groups of tools that work well together — the recommendations we would give a colleague, written down.
6 tools
FOSS Python Tools for Flood Modelling
Open-source Python packages that cover the flood workflow — from DEM to inundation map.
5 tools
QGIS Tools for Catchment Delineation
The free GIS stack for going from raw DEM to watershed boundary and stream network.
8 tools
Alternatives to HEC-RAS
Free and commercial hydraulic engines worth knowing when HEC-RAS is not the answer.
7 tools
The EPANET Ecosystem
The public-domain engine and everything built on it — Python, MATLAB, QGIS and the browser.
7 tools
The Modern MODFLOW Stack
Groundwater modelling entirely on free software — MODFLOW 6, FloPy, PEST++ and friends.
7 tools
The Free Drainage Engineer's Toolkit
Zero-budget, reviewer-accepted tools for everyday stormwater and drainage design.
12 tools
The SWMM Ecosystem
The public-domain urban drainage engine and everything that grew around it.
7 tools
Design Rainfall & IDF Toolkit
Getting defensible design storms: IDF sources, rainfall statistics and climate adjustment.
8 tools
Hydrology Data Access, Scripted
Packages and portals that put gauge records and design rainfall one function call away.