About STKO
From research to
professional structural analysis
Built on research
A solid scientific
foundation
STKO originates from years of research in computational
mechanics and earthquake engineering. It was conceived
as a direct interface to OpenSees, with the goal of making
advanced numerical modeling more accessible, robust,
and reliable for engineers and researchers.
[ Research ]
Computational models
Numerical methods
Academic validation
[ OPENSEES ]
Direct interface
Explicit modeling
Nonlinear analysis
[ STKO ]
Modeling environment
Pre & Post Processing
Database-driven workflow
[ PBE ]
Seismic design
Verification & validation
Professional workflows
DESIGN PRINCIPLES
Designed for clarity,
control, and reliability
STKO is designed to keep models explicit and workflows transparent.
There are no black boxes: every step can be verified, inspected,
and reproduced, ensuring confidence in both research and
professional applications.
Universities and research centers
STKO is widely adopted in universities and research institutions for advanced nonlinear simulations, verification studies, and the development of performance-based methodologies.
Engineering practice
In professional engineering environments, STKO supports complex structural models, nonlinear time-history analyses, and the assessment of real buildings and infrastructure systems.
Performance-based and
nonlinear analysis
STKO is used to perform performance-based seismic analyses, enabling engineers and researchers to evaluate structural behavior beyond code-based checks.
Model validation &
complex systems
STKO supports the validation of complex numerical models, including interaction effects, advanced materials, and large-scale structural systems.
REAL-WORLD APPLICATION
From research to
real-world engineering
Beyond its academic origins, STKO is actively used in real engineering contexts.
It supports complex nonlinear analyses for seismic design, infrastructure assessment,
and advanced research, bridging theory and practice.
Developed and maintained by ASDEA
STKO is developed by ASDEA Software, a company specialized in advanced computational tools for
structural and earthquake engineering, ensuring long-term development and scientific validation.
Built for today’s structural challenges
Built for today’s structural challenges
Built for today’s structural challenges
STKO adapts to different contexts in structural engineering, from academic research to large-scale design projects. Wherever advanced nonlinear analysis is needed, STKO fits seamlessly.
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TRUSTED BY
Trusted in research
and engineering
STKO is adopted by academic institutions and engineering
teams that require transparency, reliability, and full control
over nonlinear structural analyses.
Proven in research and practice
Trusted by engineers
and universities
STKO is already powering research projects, academic courses, and professional workflows. From classrooms to real-world structures, it’s recognized as the most advanced toolkit for
nonlinear analysis with OpenSees.
Built for today’s projects.
Designed to evolve.
LOOKING AHEAD
STKO is a mature platform already supporting advanced nonlinear analyses
in research and engineering practice. At the same time, it is continuously evolving to address
future challenges and professional workflows, including the upcoming STKO Professional.