Privacy-focused diagramming software supporting real-time collaboration, offline mode, and cloud storage without ads or registration.
- Diagram Editor
- Free • Open Source
- Mac
- Windows
- Linux
- Online
- Chrome OS
- Notion
- Self-Hosted
- Microsoft SharePoint
- Microsoft OneDrive
- PortableApps.com
- Google Drive
- Google Docs
- Microsoft Teams
- Google Slides
- Google Sheets
- Nextcloud
- Flathub
- Flatpak
+9Draw lets you produce anything from a quick sketch to a complex plan, and gives you the means to communicate with graphics and diagrams. With a maximum page size of 300cm by 300cm, Draw is a an excellent package for producing technical drawings, general posters, and much else.
- Diagram Editor
- Free • Open Source
- Mac
- Windows
- Linux
- BSD
- PortableApps.com
- Flathub
yEd is a powerful diagram editor that can be used to quickly create diagrams manually or import external data for analysis and auto-magically arrange even large data sets by just pressing a button. You can use yEd to quickly create flow charts, BPMN and UML diagrams...
- Diagram Editor
- Free • Proprietary
- Mac
- Windows
- Linux
- Online
- BSD
+2Open-source diagram editor with cross-platform support offering entity relationship, UML, flowchart, and network diagram creation with editable objects.
- Diagram Editor
- Free • Open Source
- Mac
- Windows
- Linux
- PortableApps.com
- FreeBSD
- Xfce
- DragonFly BSD
- NetBSD
- OpenBSD
Cloud-based tool for diagramming and collaboration, with 20M users globally, supports Visio import/export and features UML modeling and more.
- Diagram Editor
- Freemium • Proprietary
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Software as a Service (SaaS)
+6Easily create data-connected diagrams with real-time collaboration, part of Office Suite. Ideal for IT and business professionals visualizing complex info.
- Diagram Editor
- Paid • Proprietary
- Windows
PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various application such as wiki, text editor, IDE, programming language, documentation generator, and others.
- UML Modeling Tool
- Free • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- Chrome OS
Ever wanted to simplify documentation and avoid heavy tools like Visio when explaining your code? This is why mermaid was born, a simple markdown-like script language for generating flowcharts, Gantt charts and sequence diagrams from text via JavaScript.
- Diagram Editor
- Free • Open Source
- Mac
- Windows
- Linux
- Online
- Self-Hosted
- JavaScript
- Node.JS
Whimsical is a collaborative visual workspace for creating flowcharts, wireframes, virtual sticky notes, and more!.
- Mind Mapping Tool
- Freemium • Proprietary
- Mac
- Windows
- Linux
- Online
+3Google Drawings, part of Google Drive, allows users to collaborate creating, sharing, and editing images or drawings. It can be used for creating charts, diagrams, designs, flow-charts, etc.
- Diagram Editor
- Free • Proprietary
- Online
- Chrome OS
- Google Chrome
Free, real-time collaborative online tool for creating intricate, precise user flow prototypes for design teams. Fully open-source platform.
- Wireframing Tool
- Free • Open Source
- Online
- Self-Hosted
OmniGraffle can help you make eye-popping graphic documents—quickly—by providing powerful styling tools, keeping lines connected to shapes even when they’re moved, and magically organizing diagrams with just one click.
- Diagram Editor
- Paid • Proprietary
- Mac
- iPad
+5Easer is an event-driven Android automation app. It knows various events, and you, the user, could tell it what to do on what event (and even combine multiple events!). Routine actions no longer need to be taken manually.
Discontinued- Task Automation App
- Free • Open Source
- Android
- F-Droid
Create flowcharts, mind maps, org and business diagrams with AI-enhanced features and OCR. Ideal for personal and team project planning.
- Mind Mapping Tool
- Paid • Proprietary
- Mac
- Windows
- Linux
- Online
- iPhone
- Android
+3A daily drawing tool that supports low code for learning or office use. It can be used for flowchart, mind map, UML diagram, ER diagram, network topology diagram, BPMN, Venn diagram, database model diagram, whiteboard drawing, infinite canvas, and more.
Warning- Diagram Editor
- Free Personal • Open Source
- Windows
- Mac
- Linux
- Online
+6