Sequence Diagram app icon

Sequence Diagram for Mac

Create UML 2.0 style sequence diagrams using nothing more than plain text (and a sprinkling of emoji 🤓).

Use a simple text editor…

Sequence Diagram in light mode — code editor on the left, rendered diagram on the right

…to create beautiful sequence diagrams…

Rendered sequence diagram in light theme showing participants, messages, loops and alt blocks

…even in the dark!

Sequence Diagram in dark mode
Download on the Mac App Store

What people are saying

★★★★★
“The BBEdit of Sequence Diagrams”

Simple yet powerful, this App reminds me of BBEdit! Sequence Diagrams are so useful from sketching up a quick idea to writing detailed documentation. This app is based around a simple text editor with an easy to learn syntax that generates immediate visual feedback. I’ve been waiting for something like this ever since I first saw a sequence diagram written on a whiteboard. So glad somebody finally did it. The new Dark Mode feature has tipped me over the edge into leaving a review… Thank-you Mike-o-soft!

paulstringer
★★★★★
サポートの迅速さと機能拡張が素晴らしい

2019/02現在 不具合をサポートからメールすると驚くほどの早さで修正してくれます。その上、どんどん機能が進化するという。この手のアプリを求めている人には必須のツールと言えます。

Bakazo
★★★★★
“On the usefulness scale this app is 11”

Diagrams as code is my dream come true. Not to put too fine a point on it, I’ll happily pay x10 or more for a version of this app that can do other types of diagrams. Up to and including at least a large part of what OmniGraffle does.

Morning Fare
★★★★★
“Jeden Cent wert”

Einfache Syntax, klare Darstellung, umfangreiche Export-Möglichkeiten, nahtlose Git Integration. Was braucht man mehr?

Kabe aus M.
★★★★★
“Your search ends here!”

I tried many solutions before finding this app. It’s been very useful for tracking concurrency issues and documenting complex workflows.

larsparendt
★★★★★
“Best utility software purchased in a very long time”

Simplicity and a straight-forward solution. This app does exactly what it says on the tin.

iCode
★★★★★
“Right on Target”

Gets it just right with no unnecessary bells and whistles.

Plinth
★★★★★
“Best app for programatically creating sequence diagrams”

Beautiful UI, simple syntax, extensive export options, rapid bug fixes.

Uncle Laz