Public beta · free to start
Finite element analysis that opens like a web page.
Model frames, slabs, walls and shells. Run static, modal, buckling and second-order analysis, and check steel to EN 1993-1-1 or AISC 360 with the clause beside every number. It all runs on your own processor, in a browser tab.
Free plan, no card needed. Nothing to install.
OpenSteel hall
372 DoF · 70 ms
OpenConcrete floor
294 DoF · 21 ms
OpenLattice tower
498 DoF · 74 ms
OpenRoad overpass
18,654 DoF · 1.8 s
Four real projects, open read-only in the real editor: orbit them, click a member, switch results. From a 294-DoF floor bay to a 18,654-DoF road bridge solved in 1.8 s. Times are off the editor's status bar, second run.
What each example teachesFrom the first node to the calculation report, in the browser.
Draw the structure, or generate it
Place beams, slabs and walls on a grid, or start from one of 35 parametric structures — trusses, frames, grillages, towers, shells — and edit from there. Draw a slab outline with an opening in it and the all-quad mesher turns it into shell elements that share one stiffness matrix with the frame around it.
- Trusses, 3D frames, slabs, walls and shells
- Springs, releases, rigid arms and line supports
- IFC and SAF import (export on Pro), DXF underlays
Drag the load. Watch the slab remesh.
This slab is meshed and solved by the studio's own engine, compiled to WebAssembly and running in this tab. Every time the load moves or the element size changes, the mesher rebuilds the slab in quads, finer round the load and the columns, and the solver works it out with the studio's four-node shell elements. The times are measured on your machine.
Deflection in mm, downward positive.
- Max. deflection
- – mm
- Max. moment
- sagging– kNm/mhogging– kNm/m
- Estimated error
- –
- Mesh
- – quads
- Last solve, in this tab
- mesh–solve–
50 kN spread evenly over 50 × 50 cm (200 kN/m²); no self-weight.
Supported design codes
The standards the solver applies today. The theory behind it is published, so you can verify it rather than take it on trust.
| Standard | Scope | Status |
|---|---|---|
| EN 1990ULS and SLS combinations | ULS and SLS combinations | Shipping |
| ASCE 7LRFD §2.3 and ASD §2.4 combinations | LRFD §2.3 and ASD §2.4 combinations | Shipping |
| EN 1993-1-1 §6.2–6.3Steel cross-section and member resistance: flexural, torsional and lateral-torsional buckling, 6.61/6.62 | Steel cross-section and member resistance: flexural, torsional and lateral-torsional buckling, 6.61/6.62 | Shipping |
| EN 1993-1-5 §4–5Class 4 effective sections and web shear buckling | Class 4 effective sections and web shear buckling | Shipping |
| AISC 360 Ch. D–HSteel members: tension, compression buckling incl. slender elements, flexure with LTB, shear, H1 interaction | Steel members: tension, compression buckling incl. slender elements, flexure with LTB, shear, H1 interaction | Shipping |
| EN 1990 · IBC 1604.3Member deflection at SLS, each limit on its own combination | Member deflection at SLS, each limit on its own combination | Shipping |
| AISC 360 · EN 1990Storey and overall drift, and a floor-frequency screen | Storey and overall drift, and a floor-frequency screen | Shipping |
| EN 1995-1-1 §7.2Timber deflection with creep | Timber deflection with creep | Shipping |
| National annexesNationally determined parameters, set once per project | Nationally determined parameters, set once per project | Shipping |
| EN 1992-1-1Concrete design. The next module | Concrete design. The next module | Not yet |
| EN 1993-1-8Steel connections and base plates | Steel connections and base plates | Not yet |
At your desk and on site.
One account and the same projects on a desktop, laptop, tablet or phone. When someone on site asks for the reaction under column C3, you open the model and read it off.
- Nothing to install on any device. A URL and a sign-in.
- Every edit syncs as you make it. There is no save button.
- Keep working with no signal. Edits merge when you reconnect.
- On Pro, your team works in the same model at the same time.
A phone has fewer cores than a workstation, so a large model takes longer to solve on it. Every feature is available on every device.


Free to start. One plan after that.
No licence server and no second seat for the laptop. Every design module is in the one plan, and you pay only for the months you use it.
Free
€0
No card needed
- 3 cloud projects
- Models up to 500 degrees of freedom
- Every analysis type, every device
- 1 design check per project, any standard
Pro
€19.99/ month
or €13.99 a month, billed yearly
- Unlimited projects and model size
- Full calculation reports, no watermark
- Combinations generated to EN 1990 and ASCE 7
- Real-time collaboration with your team
Whatever you're reading this on can already run it.
Chrome · Edge · Firefox · Safari, on desktop, tablet and phone



