No-Code&Low-Code

OpenFlowKit

Open-source diagram tool — write code or drag-and-drop to create beautiful system architecture diagrams

openflowkit.com

Verified

Quick facts
What is it	Open-source diagram tool — write code or drag-and-drop to create beautiful system architecture diagrams
Pricing	Unknown
Platform	Web Application
Best for	creating system architecture diagrams, documenting technical workflows
Domain registered	2026

Data updated Aug. 1, 2026

What does OpenFlowKit do?

OpenFlowKit is a free, open-source diagramming tool specifically designed for technical professionals who need to create system architecture diagrams and technical workflows. It bridges the gap between code and visual design by allowing users to create diagrams either through a visual drag-and-drop interface or by writing code using Mermaid.js syntax or a custom type-safe DSL. The tool generates clean, professional diagrams that can be exported in multiple formats including SVG, PNG, and JSON.

What sets OpenFlowKit apart is its local-first approach - all data stays on your device with no cloud saves or tracking. The tool includes Flowpilot AI, an AI assistant that lets you modify diagrams through natural language commands like 'make the corners rounder' or 'add a load balancer.' It also features seamless integration with Figma, allowing you to copy diagrams from OpenFlowKit and paste them directly into Figma as editable vector shapes and text layers without any plugins.

OpenFlowKit is ideal for developers, system architects, and technical designers who need to create and maintain accurate technical documentation. It's particularly useful for teams that want to version control their diagrams alongside their codebase, or for individuals who prefer working with code but need professional-looking visual outputs. The tool's MIT license means it's completely free to use, modify, and deploy anywhere without restrictions.

Developer Tools Development — Other No-Code&Low-Code

#ai assistant#code-to-diagram#diagram tool#figma integration#local-first#open source#system architecture

Key features

What makes it stand out

Diagram as Code with Mermaid.js and type-safe DSL support

AI Assistant (Flowpilot) for natural language diagram editing

Local-first architecture keeps all data on your device

Copy-paste diagrams directly into Figma as editable vectors

Fully customizable nodes, edges, and themes with white-label branding

Who is OpenFlowKit for?

Who benefits most from this tool

creating system architecture diagrams

documenting technical workflows

designing application flows

Trust & presence

Domain Domain registered 2026

Alternatives in No-Code&Low-Code

Pipecat No-Code&Low-Code

Visual workflow builder for AI agents — drag, connect, and run multi-step AI processes with any major LLM, no code required.

Flowscript.AI No-Code&Low-Code

AI web app builder — describe your app in plain English and get a fully functional application in minutes.

Noodl No-Code&Low-Code

Open-source low-code platform for visually building full-stack applications with AI assistance.

Buildfy No-Code&Low-Code

Drag-and-drop Python GUI builder with AI widget generation — design interfaces visually and export real Python apps

Devath No-Code&Low-Code

AI-powered smart home platform — build and publish IoT apps with natural language instructions, no coding required

Rayven No-Code&Low-Code

Custom software development platform that builds data integrations, automations, and AI agents for businesses.

Subterranean No-Code&Low-Code

No-code platform to build full-stack web apps with an AI assistant that acts like a technical co-founder.

Keel Studio No-Code&Low-Code

AI-powered backend builder — describe your system, get a production-ready backend with APIs, database, and auth in minutes.

Similar tools

Diagramming AI Developer Tools

AI-powered diagramming tool — describe your idea and instantly generate flowcharts, UML, and process diagrams.

FlowCraft Diagram Generation

AI-powered diagram and flowchart creation tool — currently paused for maintenance.

Mermaid Chart Developer Tools

Create complex diagrams and flowcharts using markdown-style code or AI — perfect for developers and teams.

Top 100k site

Animated Diagrams Developer Tools

AI diagram studio — describe a system in plain English, get an animated, editable diagram in seconds

Diagramix Diagram Generation

AI-powered diagramming tool — turn text descriptions or rough sketches into polished diagrams instantly.

AI Diagram Generator Diagram Generation

AI tool that creates flowcharts, mind maps, and 16+ diagram types from text prompts or uploaded documents.

Code to Flow Developer Tools

AI-powered tool that converts code into interactive flowcharts, sequence diagrams, and class diagrams for better understanding.

AI Diagram Maker Developer Tools

AI-powered diagram generator — describe your architecture in plain text, get professional diagrams in seconds