Transom · Studio

Focused apps for Atlassian Cloud. Private by design.

Transom is a small studio. We build one app for one job, and we run it entirely inside Atlassian. Your data stays on your site.

the transom carries the load above the door fig. 1 · the first doorway: Transom Diagrams

How we work

Three rules for every app.

01

One job, done well.

Each app solves one problem for Atlassian Cloud teams. No suite. No bloat. A short list of features that work.

02

Private by design.

We build on Atlassian Forge. Our apps run on Atlassian's infrastructure. We run no servers that touch your data.

03

Plain and reachable.

Clear prices. Docs that state the limits. Every support email gets a real answer: critical issues within 24 hours, all others within 5 business days.

The first app

Transom Diagrams

PlantUML and Mermaid diagrams for Confluence Cloud. They render inside Atlassian. Your diagram source never leaves your site.

  • PlantUML
  • Mermaid
  • Built on Forge
PreviewIllustration
Request Authenticated? yes no Load dashboard Sign in Done

Where your data lives

Inside your Atlassian site. Nowhere else.

Transom Diagrams has no backend of ours. The diagram is drawn in your browser, from source that sits on your own Confluence page.

Your Atlassian site
Confluence pageYour diagram source is saved in the macro on the page.
Transom DiagramsRenders in your browser, inside Atlassian's app frame.
Page attachmentA PNG made on save, so PDF and Word exports show the diagram.
None Transom servers that receive your diagrams
None External render services
None Analytics or tracking inside the app

Read the security details

Questions before you install?

Email [email protected]. We reply to critical issues within 24 hours and to everything else within 5 business days.