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Tools

Simulations, CAD, calculators and planning tools for technical learning and project preparation.

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24 tools

Tools updated 11 October 2026

Engineering & Technical Drawings

PhETInteractive simulations of forces, energy, circuits and physics.University of Colorado Boulder

Details

Access & terms: Free learning simulations.
Use: Learning or planning tool; no trade qualification or engineering approval.
Platform: Browser; educational simulations

GeoGebraGeometry, dimensions, graphs and interactive mathematics.GeoGebra

Details

Access & terms: Free for non-commercial learning; commercial use requires a separate licence.
Use: Learning or planning tool; no trade qualification or engineering approval.
Platform: Browser or app; check use terms

DesmosGraph equations and practise technical calculations.Desmos Studio

Details

Access & terms: Free mathematics tools.
Use: Learning or planning tool; no trade qualification or engineering approval.
Platform: Browser; calculators and graphing

FreeCADParametric 3D modelling and assembly design practice.FreeCAD project

Details

Access & terms: Free open-source desktop software.
Use: Learning or planning tool; no trade qualification or engineering approval.
Platform: Desktop download; Windows, macOS and Linux

LibreCADPractise 2D drafting, layouts and technical drawings.LibreCAD project

Details

Access & terms: Free open-source desktop software.
Use: Learning or planning tool; no trade qualification or engineering approval.
Platform: Desktop download; Windows, macOS and Linux

Engineering ToolBox — trade formulas & calculatorsMath and trade formulas, unit conversions, airflow, heat loss, pipe flow, pumps, motors, materials and concrete quantities.Engineering ToolBox

Details

Access & terms: Free browser calculators and technical references. References are not Ontario code approval or an approved project design.
Use: Reference and planning calculations; confirm units, assumptions and applicable local requirements.
Platform: Browser; metric and imperial references; international engineering information

Paul’s Online Math Notes — formula sheetsDownloadable math formulas for algebra, trigonometry, calculus, derivatives, integrals and Laplace transforms.Paul Dawkins / Lamar University

Details

Access & terms: Free online notes and downloadable PDFs. Follow the publisher’s terms for copying or redistribution.
Use: Math reference sheets; no qualification or project approval issued.
Platform: Browser or PDF reader; general mathematics

Wolfram MathWorld — mathematics & formulasSearchable math formulas, geometry, algebra, calculus, probability and applied mathematics.Wolfram Research

Details

Access & terms: MathWorld is a free reference service. Other Wolfram products have separate access and pricing terms.
Use: Mathematics reference; no certificate or project approval.
Platform: Browser; general and advanced mathematics

Blender — 3D modelling & visualizationCreator and media work, 3D models, project visualization, rendering and animation.Blender Foundation

Details

Access & terms: Free open-source software for personal, educational and commercial use. Third-party assets and add-ons have separate licences.
Use: Desktop 3D software; visual models are not certified engineering drawings.
Platform: Desktop download; Windows, macOS and Linux

Inkscape — graphics & technical illustrationsCreator and media graphics, vector diagrams, technical illustrations, signage and print artwork.Inkscape project

Details

Access & terms: Free open-source software for commercial and non-commercial use. Imported artwork and fonts have their own licences.
Use: Desktop illustration software; drawing accuracy depends on the author and input dimensions.
Platform: Desktop download; Windows, macOS and Linux

Assembly & Installations

QGIS — mapping & site informationSite maps, location layers, geographic analysis, spatial measurements and map reports.QGIS project

Details

Access & terms: Free open-source desktop software. External datasets, plugins and third-party cloud services can have separate terms or fees.
Use: Desktop GIS software; data quality and coordinate systems need to be checked.
Platform: Desktop download; Windows, macOS and Linux

Skilled Trades

CircuitJSBuild and explore simulated electronic circuits.Paul Falstad / CircuitJS

Details

Access & terms: Open-source simulator.
Use: Learning or planning tool; no trade qualification or engineering approval.
Platform: Browser; circuit simulation

Tinkercad CircuitsElectronics and Arduino simulation with guided learning.Autodesk

Details

Access & terms: Free web app; account requirements apply.
Use: Learning or planning tool; no trade qualification or engineering approval.
Platform: Browser; electronics learning

All About Circuits — electrical formulas & calculatorsElectricity, Ohm’s law, electrical power formulas, AC and DC circuits, resistance and electronics.All About Circuits

Details

Access & terms: Public browser calculators and a free electrical textbook. Electrical theory does not replace the applicable electrical code or qualified design.
Use: Educational circuit reference; not a trade certificate or installation authorization.
Platform: Browser; international electrical and electronics learning

QElectroTech — electrical & fluid-power schematicsElectrical, hydraulic and pneumatic diagrams, controls documentation and equipment schematics.QElectroTech project

Details

Access & terms: Free open-source software under the GNU GPL. Confirm the supported release and system requirements on the download page.
Use: Schematic editor; no built-in simulation or engineering approval.
Platform: Desktop download; Windows, macOS and Linux builds

EnergyPlus — HVAC & building energy simulationHeating and cooling loads, ventilation, thermal comfort and building energy and water use.U.S. Department of Energy / EnergyPlus

Details

Access & terms: Free open-source software. Results depend on model inputs and are not an approved HVAC design or code compliance decision.
Use: Advanced simulation software; technical setup and interpretation are required.
Platform: Desktop download; Windows, macOS and Linux

EPANET — pipe flow, pressure & water systemsWater distribution networks, pipes, pumps, tanks, valves, pressure, flow and pumping energy.U.S. Environmental Protection Agency

Details

Access & terms: Free public-domain software. This models water distribution; it is not an Ontario plumbing-code reference.
Use: Advanced hydraulic modelling software; not a plumbing certificate or approved installation design.
Platform: Desktop download; EPA’s EPANET 2.2 installer is Windows-based; manuals available online

Industrial Systems & Automation

OpenModelica — mechanical & industrial simulationModelica-based modelling and simulation of mechanical, electrical, thermal and control systems.Open Source Modelica Consortium

Details

Access & terms: Free open-source software. Distribution and third-party libraries have their own licence terms; optional support and memberships are separate.
Use: Advanced modelling software; setup, model validation and technical interpretation are required.
Platform: Desktop download; models and simulations run locally

Safety & Material Handling

CCOHS Safe Work — workplace safety referenceCanadian workplace hazards, chemicals, ergonomics, safety fact sheets, videos and guidance.CCOHS

Details

Access & terms: Free bilingual app from the Canadian Centre for Occupational Health and Safety.
Use: Safety reference app; no operator certification or trade qualification.
Platform: iPhone/iPad and Android download; English and French; offline access to downloaded content

Site Technology & Digital Systems

draw.ioNetwork diagrams, process maps and installation planning.draw.io

Details

Access & terms: Free diagram editor; paid third-party integrations are separate.
Use: Learning or planning tool; no trade qualification or engineering approval.
Platform: Browser or desktop

Wireshark — network troubleshootingNetwork traffic inspection, protocol analysis and connection troubleshooting.Wireshark Foundation

Details

Access & terms: Free open-source software with no licence fee; not a limited demo.
Use: Desktop network analyser; capturing traffic requires appropriate permissions and network access.
Platform: Desktop download; Windows, macOS and Linux

OBS Studio — recording & live streamingCreator and media work, screen recording, video capture, audio/video scenes and live streaming.OBS Project

Details

Access & terms: Free open-source software, including commercial use. Streaming platforms and optional equipment have separate terms and costs.
Use: Desktop recording software; connect compatible cameras, microphones and streaming destinations as needed.
Platform: Desktop download; Windows, macOS and Linux; check current system requirements

Project & Franchise Operations

ProjectLibre Desktop — scheduling & project costsGantt charts, task dependencies, milestones, calendars, resource assignments, rates and project costs.ProjectLibre

Details

Access & terms: Free open-source Desktop edition. ProjectLibre Cloud and team services are separate products with separate terms.
Use: Desktop planning software; project files remain local unless you share them.
Platform: Desktop download; Windows, macOS and Linux

LibreOffice — estimates, spreadsheets & documentsMaterial lists, estimating spreadsheets, labour costs, budgets, reports, documents and presentations.The Document Foundation

Details

Access & terms: Free open-source software, including business use without licence fees. Optional professional support is separate.
Use: Desktop office suite; create and maintain your own documents and calculation templates.
Platform: Desktop download; Windows, macOS and Linux

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Engineering & Technical Drawings

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