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Keep your systems in mind

Describe each system once and Mynden draws the diagrams. Its decisions, risks and reviews stay with it.

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Free for one person, with as many systems as you like.

Mynden showing the Checkout system: its context diagram with customers, support agents, Catalogue and Stripe, what needs attention, and its description and tech stack beside it.

Features

Diagrams that stay up to date

Describe who uses a system, what it's built from and what it talks to. Mynden draws the C4 diagrams and keeps them in step.

The design of the Checkout system in Mynden: its actors, and its containers with their type, description, technology and open threats.

An assistant that suggests, you decide

Describe a change in plain words. Nothing changes until you apply it.

Mynden's assistant answering “Orders need a fraud check before we charge the card” with three suggested changes to Checkout: a Fraud check container, its connection from the Orders API and a risk that it slows down checkout, with buttons to apply or dismiss them.

Decisions and their reasons

Write down why the system is built the way it is, next to the parts it affects.

A decision record in Mynden, ADR-001 Keep orders in PostgreSQL, with its context, decision and consequences, the review finding about it, and its number, status and the containers it concerns in the margin.

Risks and threats

Track what could go wrong, who owns it and what's being done about it.

The threats of the Checkout system in Mynden: three open threats on a likelihood and impact matrix, and a breakdown by STRIDE category.

What needs attention

See at a glance which systems have open risks, overdue work or no recent review.

The Northwind Retail dashboard in Mynden: Catalogue, Checkout and Warehouse side by side with their design, decisions, open risks, open threats, last review and tasks, and recent activity below.

Landscape

How all your systems depend on each other, on one map.

The landscape of Northwind Retail in Mynden: Checkout, Catalogue and Warehouse with the people who use them and how they depend on each other.

Also in Mynden

Architecture reviews
Review a system with your team and follow up on what you find.
Tasks
Turn a risk or a finding into work with an owner and a due date.
Work together
Invite your team to edit, or to read along.
Your AI tools
Connect the AI tools you already use to read and update your systems.
Bring what you have
Import an existing model, and export yours whenever you like.
History
See who changed what, and when.

Start with one system

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