Best Flow Charts And Diagrams in 2025

Online diagramming application.

Key draw.io features:

Free User-Friendly Interface Collaboration Integrations

Open Source

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

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

Key Graphviz features:

Automated Layout Customization Versatility Integrations

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

Free database diagrams designer for analysts & developers 🛠.

Key DBDiagram.io features:

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

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

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

Scalable, secure, cross-device and enterprise-ready team collaboration tool for distributed teams. Join 2M+ users & 8000+ teams from around the world.

Key Miro features:

Collaborative Features User-Friendly Interface Versatile Templates Integration Capabilities