Is Calma Studio really free?

Yes — drawing and exporting are free, with no signup to start. An account is only for saving and managing your designs.

Is it a good Lucidchart alternative for Azure?

For Azure architecture specifically, yes: Azure-native grouping and Bicep/Terraform/ARM export are its focus. For non-Azure diagramming, a general-purpose tool may suit you better.

How does it compare to Cloudcraft?

Both draw cloud diagrams. Cloudcraft leans on live scanning of a connected account and started AWS-first; Calma Studio is a free, Azure-first design canvas that exports to infrastructure-as-code.

Do I need to install anything?

No — it runs in your browser.

Can I export to Terraform?

Yes — and to Bicep and ARM, from the same diagram. See Turn an Azure diagram into Bicep, Terraform & ARM.

Free Lucidchart alternative for Azure

The short version: Calma Studio is a free, browser-based Azure architecture diagram tool you can use instead of Lucidchart or Cloudcraft — no signup to start. It has official Azure icons, groups resources the way Azure does (resource groups, VNets, subnets), shows an isometric 3D view, and — the part most diagram tools skip — exports your diagram to Bicep, Terraform and ARM. Open Studio →

Why people look for an alternative

Teams tend to arrive at Calma Studio from general-purpose diagram tools for a few recurring reasons:

Free, no seat pricing — draw and export without a paid plan or a per-editor licence.
Azure-first, not everything-first — the canvas speaks Azure: official icons and native resource-group / VNet / subnet grouping, instead of a generic shape library you arrange by hand.
From diagram to deployable code — export to Bicep, Terraform and ARM, so the picture becomes infrastructure you can actually ship.
Opens instantly — no signup to start drawing; create a free account only when you want to save designs.

What you get with Calma Studio

Official Azure icons — by resource type, with shape and colour by category.
Azure-native grouping — resource groups, VNets and subnets as real containers, not hand-drawn boxes.
Isometric 3D view (beta) for presentations.
Export to Bicep, Terraform and ARM — from the same diagram, at export time.
Free and instant — no signup to start; an account is only for saving your designs.

See it in context on the Azure architecture diagram tool page, or open a ready-made design from the Azure architecture diagram templates gallery.

When Lucidchart or Cloudcraft might still fit

Being straight about this makes the choice easier:

You diagram far more than Azure — flowcharts, org charts, UML, general whiteboarding across many domains. General-purpose tools like Lucidchart are built for that breadth.
You want live scanning of a running cloud — Cloudcraft (now part of Datadog) can generate diagrams from a connected AWS or Azure account. Calma Studio is a design canvas, not a live scanner. (Calma Cloud's separate security product does read a live Azure tenant — see What is CSPM for Azure?.)

If your work is Azure architecture and you want it to turn into code, Calma Studio is the faster, free path.

Open Calma Studio — free, no signup →

FAQ

Is Calma Studio really free? Yes — drawing and exporting are free, with no signup to start. An account is only for saving and managing your designs.
Is it a good Lucidchart alternative for Azure? For Azure architecture specifically, yes: Azure-native grouping and Bicep/Terraform/ARM export are its focus. For non-Azure diagramming, a general-purpose tool may suit you better.
How does it compare to Cloudcraft? Both draw cloud diagrams. Cloudcraft leans on live scanning of a connected account and started AWS-first; Calma Studio is a free, Azure-first design canvas that exports to infrastructure-as-code.
Do I need to install anything? No — it runs in your browser.
Can I export to Terraform? Yes — and to Bicep and ARM, from the same diagram. See Turn an Azure diagram into Bicep, Terraform & ARM.