Best Flow Charts And Diagrams in 2025

Online diagramming application.

Key draw.io features:

Free User-Friendly Interface Collaboration Integrations

Open Source

A cloud-based diagram maker for companies, teams, and you.

Key Cacoo features:

Collaboration User-Friendly Interface Extensive Template Library Integration Options

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PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.

Key PlantUML features:

Simple Syntax Quick Diagram Creation Version Control Friendly Integrations

Open Source

LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.

Key LucidChart features:

User-Friendly Interface Collaboration Features Integration Capabilities Template Library

Create diagrams and visualizations using text and code.

Key Mermaid features:

Ease of Use Integration Automated Diagrams Cost-effective

Open Source

Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.

Key Excalidraw features:

User-Friendly Interface Real-Time Collaboration Free to Use Open Source

Open Source freemium $7.0 / Monthly

Simplify and communicate complex information using data-linked diagrams.

Key Visio features:

Integration with Microsoft Ecosystem Wide Range of Templates and Shapes Cloud-Based Collaboration Robust Data Linking

yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.

Key yEd features:

User-Friendly Interface Versatile Diagram Types Automatic Layouts Cross-Platform

Diagrams lets you draw the cloud system architecture in Python code. It was born for prototyping a new system architecture without any design tools. You can also describe or visualize the existing system architecture as well.

Key Diagrams features:

Ease of Use Flexibility Integration with Popular Cloud Providers Open Source

Open Source

Graphviz is open source graph visualization software. It has several main graph layout programs.

Key Graphviz features:

Automated Layout Customization Versatility Integrations

Free database diagrams designer for analysts & developers 🛠.

Key DBDiagram.io features:

User-Friendly Interface Markdown-style Syntax Collaboration Features Export Options

The C4 model for visualising software architecture. Context, Containers, Components, and Code.

Key C4 model features:

Simplicity Scalability Clarity of Communication Standardization

Open Source

Creates diagrams from textual descriptions! It provides a unified API with support for BlockDiag, BPMN, Bytefield, C4 (with PlantUML), Ditaa, Erd, GraphViz, Mermaid, Nomnoml, PlantUML, SvgBob, UMLet, Vega, Vega-Lite, WaveDrom.

Key Kroki features:

Wide Range of Diagrams Text-Based Diagrams Web-Based and Open Source API Integration

Open Source

An open-source tool for generating flowcharts from text.

Key flowchart.fun features:

User-Friendly Interface Real-Time Collaboration No Sign-Up Required Automatic Layout

Open Source