TSLOPE 2D + 3D SLOPE STABILITY SOFTWARE Built for geotechnical engineers working across civil, mining and complex slope projects.

2D and 3D slope stability analysis.
One efficient workflow.

Build, import, modify and compare slope stability models in 2D and 3D. Developed with practising engineers to make analysis efficient while keeping reliable engineering results at the centre.

Import existing Slide2 or SLOPE/W models, connect your project data, and review factors of safety without moving between separate 2D and 3D programs.

Build and edit without a licence 2D + 3D in one package Flexible licences Developed over 20+ years

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No payment required. Your trial starts when you first use the licence.

Full 2D and 3D analysis from US $175/day. Pay only for the time you need.

Stability factor FOS 1.42

Start Free 14-Day Trial Book a demo Day licence · US $175

Practical 2D and 3D slope stability in one workflow.

Build, solve and compare 2D and 3D analyses from the same model without rebuilding project data between separate software packages.

2D + 3D in one workflow

Build, iterate and report from the same model set.

Build now. Solve when you're ready.

Create and edit models without an active licence. Activate only when you need to solve.

Day Week Month Pay for what you use

QGIS integration

Keep spatial data aligned and consistent throughout the model.

Already using Slide2, Slide3 or GeoStudio?

Compare 2D and 3D analysis, QGIS and Maptek connections, model-building workflows and flexible project licensing. See where TSLOPE could fit your existing workflow.

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Real project application Karaka Bay coastal slope assessment

From real site data to defensible 3D and 2D results.

Historical landslide evidence, terrain, borehole information, geological interpretation and groundwater conditions were brought together in one TSLOPE model. A 2D section was then extracted from the 3D model for direct comparison.

3D Spencer analysis FS 1.84

2D section check FS 1.81

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Karaka Bay 3D slope stability analysis in TSLOPE showing factor of safety 1.84

3D slope stability result Critical failure surface and sliding direction identified across the full slope.

Technical knowledge

Slope stability knowledge and technical resources.

Explore practical technical notes, TAGAsoft papers and curated third-party research covering 2D and 3D slope stability analysis, modelling assumptions and result interpretation.

Practical explainers

Technical Notes

Short, practical explanations for geotechnical engineers reviewing slope stability models, checking assumptions and understanding the behaviour behind the calculated factor of safety.

Model review and analysis checks
Line of thrust interpretation
Sliding direction in 3D
2D and 3D model comparison

Featured topic Why sliding direction matters in 3D slope stability analysis

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External research

Publications Library

Search respected third-party papers, reports and reference material by author, method, topic or publication year.

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TAGAsoft research

Technical Papers

Read formal papers, worked examples and case studies covering 3D limit equilibrium analysis, seismic assessment, back-analysis and practical TSLOPE applications.

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Evaluate TSLOPE on your next slope stability analysis.

Test TSLOPE with your own slope model. Your free 14-day trial starts when you first use the licence, and no payment is required.