Krita — The Complete Guide: Free Digital Painting, Sketches and Hand-Drawn Renderings
Krita is free, open-source digital painting software: many brushes, layers and tablet support for architectural sketches and hand-drawn renderings.
Guides and Articles
Scribus — The Complete Guide: Free Layout for Datasheets, Catalogues and Posters
Scribus is free, open-source desktop publishing and an InDesign alternative: datasheets, catalogues and posters, with print-ready PDF and CMYK colour.
Numbat — The Complete Guide: A Free Scientific Calculator That Checks Your Units
Numbat is a free scientific calculator and scripting language that checks units in every calculation: conversions, quick hand calcs, no unit errors.
JuPedSim — The Complete Guide: Free Pedestrian and Crowd Evacuation Simulation
JuPedSim is a free, open-source pedestrian simulation library: evacuation times, bottlenecks and crowd flow in buildings, stations and stadiums.
Modelio — The Complete Guide: Free UML and BPMN Modelling and Architecture Documentation
Modelio is a free, open-source UML and BPMN modelling tool with SysML, ArchiMate and requirements extensions, plus code and document generation from the model.
Eclipse Papyrus — The Complete Guide: Free Open-Source UML and SysML Modelling
Eclipse Papyrus is a free, open-source UML and SysML environment: diagram editors, profiles, and extensions for simulation and code generation.
Capella — The Complete Guide: Free Model-Based Systems Engineering with Arcadia
Capella is a free, open-source MBSE tool built on the Arcadia method: from operational analysis to physical architecture, for aerospace, rail and defence.
GeoDa — The Complete Guide: Free Spatial Statistics and Hot-Spot Analysis
GeoDa is free University of Chicago software for spatial data analysis: autocorrelation, hot spots and spatial regression for accidents and pollution.
ESA SNAP — The Complete Guide: Free Satellite Image Processing and Ground Subsidence Mapping
ESA SNAP is the European Space Agency’s free toolbox for Sentinel data: radar and optical processing, InSAR for subsidence, vegetation indices and floods.
thermo — The Complete Guide: Thermodynamic Properties and Phase Equilibria in Python
thermo is a free Python library for thermodynamic properties and phase equilibria, with data for thousands of chemicals, equations of state and flashes.
Avogadro — The Complete Guide: Building and Visualising Molecules and Crystals in 3D
Avogadro is a free, open-source 3D editor for molecules and crystals: build a structure, optimise geometry, measure bonds, prepare input for chemistry codes.
ROSS — The Complete Guide: Rotordynamics in Python for Pumps, Compressors and Turbines
ROSS is a free Python library for rotordynamics: critical speeds, Campbell diagrams, unbalance response and stability for pumps, compressors and turbines.