SimpleDiagrams Desktop.
So easy.
What's up.

Make hand-drawn flowcharts, process diagrams and quick sketches with a native Mac app. Work offline, with one purchase and no subscription.

Start your free 7-day trial today with the download from our website. The Mac App Store edition is paid up front and has no trial.

Download for Mac
 Learn more

More shapes for more kinds of work

Add free hand-drawn libraries for different domains, from AWS and Google Cloud architecture to value stream mapping, networks, education and more.

Browse all shape libraries
Icon of little dude saying 'more libraries on the way'

AWS Networking & Content Delivery

A selection of shapes from AWS Networking & Content Delivery

Hand-drawn versions of the AWS Networking and Content Delivery shapes.

22 shapes · Free · For SimpleDiagrams 5 for Mac

Explore this library

Google Cloud Shapes

A selection of shapes from Google Cloud Shapes

Hand-drawn versions of the Google Cloud product shapes. Use them when you are building something complicated in Google Cloud and need to remember what on earth you were trying to do.

42 shapes · Free · For SimpleDiagrams 5 for Mac

Explore this library

Energy

A selection of shapes from Energy

Batteries, solar panels, power plants, fuel gauges, oil barrels and the occasional hamster wheel.

16 shapes · Free · For SimpleDiagrams 5 for Mac

Explore this library

Simple diagrams for everyday work

Flowcharts, architecture sketches, org charts, plans and screen flows, each drawn in minutes.

A flowchart on graph paper, from an alert through triage and a severity decision to mitigation and a post-incident review.

Incident response

Walk a team through who does what when an alert fires.

Blue ink on a yellow legal pad: customers reach three services through an API gateway, and each service has its own data store.

Cloud architecture

Show services, data stores and the systems they depend on.

A ballpoint sketch on a napkin of a Chief Technology Officer, three departments beneath, and their teams on the bottom row.

Org chart

Sketch who reports to whom as quickly as you would on a napkin.

A mind map on coffee-stained paper with a cloud migration plan in the centre and dashed branches to discovery, build, cut-over and risks.

Project plan

Map a project's workstreams and risks around one goal.

A blueprint with white lines on a blue grid: three source systems feed a warehouse that produces dashboards and board reports.

Data pipeline

Trace data from source systems to the reports people read.

A screen flow on handmade paper from a sign-in page through company single sign-on and a second factor to a portal home page.

Sign-in flow

Sketch the screens a user passes through, and where it can fail.

Or let your AI agent do the drawing

Two free, open-source skills teach Claude Code, Codex and other agents to make diagrams and shapes you can open and keep editing in SimpleDiagrams Desktop.

An order-flow diagram built by the skill: a customer, a web shop, an order service, payments, a warehouse and an orders database.

Diagram skill

Describe a process, a system or a team, and your agent builds the whole diagram: shapes from the built-in libraries, laid out on a grid and connected. It arrives as an ordinary document, ready to restyle.

“Draw how a customer order moves through our web shop, order service, payments and warehouse.”
Get the diagram skill on GitHub
A written request for a 3D art museum with palm trees and a queue of visitors, and the hand-drawn shape the skill produced from it.

Hand-drawn shape skill

Can't find the exact shape you need? Ask for it. Your agent draws a hand-drawn SVG that converts to a native shape, with its fill and line colors mapped to the color chips. Build a small library that suits your project.

“Please generate a 3d art museum building with palm trees and a line of people waiting to get in. Add washed out color, opacity layers for shadow, and only link building stroke and fills to the color chips.”
Get the shape skill on GitHub Read the blog post