Structural analysis & design software, in your browser
Model, analyze and design structures — 3D frames, steel connections, seismic and rapid checks — from one cloud platform.
Four tools, one platform
Structural 3D
Advanced 3D frame analysis with intuitive modeling tools.
Launch tool →Connection Design
Steel connection design for bolted and welded joints.
Launch tool →Quick Design
Rapid beam, column and connection verification.
Launch tool →SeismoLab
Seismic analysis and earthquake engineering.
Launch tool →Why engineers choose StructLib
Runs in your browser
No installs, no licences to manage. Work from anywhere on any modern computer.
Transparent calculations
See the checks behind every result and export clean, shareable PDF reports.
One connected workflow
Model, analyze, design and document without leaving the platform.
Frequently asked questions
Is StructLib really fully browser-based?
Yes. StructLib runs entirely in your web browser — there is nothing to install or license-manage. You can model, analyze and design from any modern computer with an internet connection.
Which tools does StructLib include?
StructLib bundles Structural 3D for 3D frame analysis, Connection Design for bolted and welded steel joints, Quick Design for rapid member checks, and SeismoLab for seismic analysis — all on one platform.
Can I export calculation reports?
Yes. Designs and checks can be exported as clean, shareable PDF reports so you can document and submit your work.
Do I need to install anything or buy a licence dongle?
No. Because StructLib is cloud-based, you simply open the portal in your browser and start working — no installers, dongles or per-machine setup.