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Early access · Design systems where flow meets structure

The system architecture canvas for developers who need flow and structure.

A modern diagramming tool that blends whiteboarding with structured system design. Start locally, then move into cloud workspaces when you are ready to share.

Flowstry canvasWorkspace ready
Architecture flowLibrary panel
API
Queue
DB
Cache
Service
Gateway
Drag structured shapes, connect flows, and annotate decisions in seconds.

Features

Built for system architecture, designed for clarity

Flowstry combines a flexible whiteboard with structured diagramming so engineers can map complex systems without losing flow.

Local-first canvas

Start creating instantly with no login required. Your ideas stay on-device.

Structured diagramming

Precise layouts, connectors, and aligned components for clean system maps.

Freeform brainstorming

Sketch freely, then turn concepts into structured architecture diagrams.

Workspaces & folders

Organize diagrams by team, project, or architecture layer.

Cloud sync when ready

Sign up to sync across devices and keep everything in one place.

Fast iteration

Quickly refine flows, annotate decisions, and keep systems readable.

Architecture library

A structured shape library for modern systems

Drag cloud, data, and infrastructure shapes from the library panel. Flowstry includes AWS, GCP, Azure, and Kubernetes libraries for fast, consistent architecture diagrams.

AWS, GCP, Azure, and Kubernetes shapesArchitecture-ready componentsBuilt for system design workflows
Library panelSystem shapes

Compute

Database

Queue

Cache

Load balancer

Storage

Workspaces

Cloud workspaces that keep system design organized

Create a free account to unlock cloud workspaces, folders, and saved diagrams that sync across devices.

Free accounts with cloud workspacesFolders and diagrams to stay organizedSync across devices
Workspace draftsSaved
System auditRecent
Service mapRecent
Infrastructure draftRecent
Cloud workspaceSynced
Payments platformShared workspace
Identity servicesShared workspace
Streaming pipelineShared workspace

Use cases

From brainstorm to production architecture

Flowstry helps backend engineers, architects, and DevOps teams document complex systems without losing the technical detail.

Start designing now
System architecture and infrastructure planningService topology and data flow mappingAPI design and integration diagramsTeam brainstorming and technical whiteboarding

Flowstry

Ready to design your next system?

Start locally in seconds or sign up to unlock cloud workspaces, organization, and shared architecture diagrams.

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