18.3
Structurizr is a models-as-code tool for creating multiple software architecture diagrams from one C4 model written in Structurizr DSL.
Free planOpen sourceWebAPILinux
Best Diagramming Software in 2026
When you need to map a process, sketch a system, or organize ideas visually, diagramming software offers different ways to work. Compare diagram types and import/export formats, then consider offline editing and real-time collaboration for your preferred workflow. Desktop apps and editor seat limits can matter for how and where you work with others; free-plan availability and paid-from pricing add cost context.…
28.1
Creately is a visual collaboration platform built around an infinite canvas for brainstorming, diagramming, planning, workshops, project management, and research.
Free planWebAPILinux
37.9
SmartDraw is a paid diagramming application from SmartDraw, founded in 1994 and headquartered in The Woodlands, Texas.
AndroidiOSWeb
- 4
Sparx Enterprise Architect
Sparx Enterprise Architect is a multi-user visual modeling tool for business and IT systems, software and systems engineering, and real-time and embedded development.
Free planWebAPILinuxmacOS7.9$245 one-time - 5
EdrawMax
EdrawMax is a diagramming product for creating and exporting many kinds of diagrams.
Free planAndroidiOSWebLinux7.7From $5.90 a month - 6
Gluu
Gluu is a paid process management platform from Gluu, founded in 2011 and headquartered in Copenhagen, Denmark.
AndroidiOSWebAPI7.7From €2 a month - 7
Camunda
Camunda is a business-process orchestration platform for coordinating people, AI agents, systems, and devices across end-to-end workflows.
Free planWebAPILinuxmacOS7.6Free plan - 8
draw.io
draw.io is a free, open-source diagramming tool for making visual layouts ranging from flow charts and mind maps to network diagrams, floor plans,…
Free planOpen sourceAndroidiOSWebWindows7.6Free plan - 9
Preceden
Preceden is a web-based tool for creating visual timelines about projects, history, legal cases, research, and writing.
Free planAndroidiOSWeb7.6From $10 a month - 10
Software Ideas Modeler
Software Ideas Modeler is a CASE tool for software and process design built around diagrams.
LinuxmacOSSelf-hostedWindows7.6$59 one-time - 11
Cacoo
Cacoo is an online diagramming and visual collaboration tool for creating flowcharts, wireframes, mind maps, workflows, and other visuals.
Free planWebAPISelf-hosted7.5From $6 a month - 12
Eraser
Eraser is a diagramming tool for technical teams that can create diagrams from prompts, code, files and private Git repositories.
Free planWebAPIExtensionSelf-hosted7.5From $15 a month - 13
Ilograph
Ilograph creates interactive visual documentation for systems and the relationships and flows between their components.
Free planWebAPILinuxmacOS7.5From $14.99 a month - 14
Microsoft Visio
Microsoft Visio is diagramming software for turning complex information into visual diagrams.
Free planWebmacOSWindows7.4From $5 a month - 15
Lucidchart
Free planAndroidiOSWeb7.3Free plan - 16
Mermaid
Mermaid is an open-source JavaScript tool that turns Markdown-inspired text definitions into diagrams and visualizations.
Free planWebAPIExtensionLinux7.3From $10 a month - 17
Visual Paradigm
Visual Paradigm is a visual modeling and development platform spanning diagramming, code engineering, agile management, and enterprise architecture.
Free planWeb7.3From $4 a month - 18
Flowdia Diagrams
Flowdia Diagrams is diagramming software for creating flowcharts, mind maps, network and cloud architecture diagrams, UML diagrams, and process visuals.
Free planAndroidiOSWindows7.2$9.99 one-time - 19
Gliffy
Gliffy is a web-based diagramming tool with support for a wide range of visual formats, including flowcharts, UML and BPMN diagrams, network maps,…
Free planWeb7.2From $2.80 a month - 20
Arcentry
Arcentry is software for creating interactive infrastructure diagrams for cloud, on-premises, and open-source systems.
Free planWebAPISelf-hosted7.0From $9.90 a month - 21
CloudSkew
CloudSkew is a web editor for cloud architecture diagrams, network diagrams, and flowcharts.
Free planWeb7.0From $36 a year - 22
Hava
Hava generates interactive cloud infrastructure diagrams from connected AWS, Azure, and GCP environments.
Free planWebAPISelf-hosted7.0From $59 a month - 23
IcePanel
IcePanel is a collaborative software-architecture diagramming and modelling tool built around the C4 model.
Free planWebAPI7.0From $40 a month - 24
MyDraw
WebmacOSWindows6.9 - 25
UMLet
UMLet is a free, open-source tool for quickly sketching UML diagrams.
Free planWebExtensionLinuxmacOS6.9Free plan