If you have landed here, Tedds is probably feeling too rigid, too expensive per seat, or too tied to Windows for how your team works now. We make CalcTree, so we are biased. Tedds is also genuinely good at a few things, and we are not going to pretend otherwise.
What Tekla Tedds is genuinely good at
Tedds has earned its place. It ships with a large, well-maintained library of coded checks across Eurocodes, British Standards and US codes, so for standard members and connections you get to a defensible result quickly. Its Word-based output is familiar and easy to hand to a checker, and many practices have years of trust built up in it. If your work is almost entirely standard checks from its library, Tedds does the job.
Where Tedds starts to hold teams back
The trouble usually starts outside the library. You can write your own calcs in Tedds, but it is far harder than picking one off the shelf, so bespoke work tends to fall back to a spreadsheet anyway. It is desktop and per-seat, so licences add up and cross-office collaboration means passing files around. It is Windows-only. There is nothing in Tedds that will draft or review a calc with AI. And your work lives in its format rather than moving freely into the documents your team already uses.
What to look for in a replacement
Keep the standards coverage you rely on. Make building your own calc as easy as using a library one, so bespoke work stops falling back to Excel. Get cloud access and real-time collaboration instead of file passing. And keep output a checker will accept, with version history behind it so the review is traceable.
Where CalcTree fits
We built CalcTree for exactly this move. Math notation and Python sit on the same page, so you pull a standard check together fast and extend it however the project needs, with no fallback to a spreadsheet. It is cloud based with real-time collaboration, runs in any browser on any OS, and everything is versioned with a full audit log so a checker can see exactly what changed. The AI can draft a first-pass calc against a standard and review your work against a design document, and print-ready reports are there when you need something to sign off.
And if you already have a library of Tedds calcs, you do not have to rebuild them cold. Send us one and we will rebuild it in CalcTree so you can see your own calc working before you commit.
Frequently asked questions
Does CalcTree cover Eurocode, British Standard and US code checks?Yes. You can build checks to any standard, and there is a growing template library across common structural codes. Because you are not limited to a fixed library, you can also adapt a check to a project-specific requirement.
Can I build my own calculations, not just use a library?Yes, that is the point. Math notation and Python on the same page means a bespoke calc is as native as a standard one.
Does it run on Mac?Yes. CalcTree runs in the browser, so it works the same on Mac, Windows or Linux.
Can my team collaborate on the same calc?Yes, in real time, with version history, rather than emailing files back and forth.
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