Free Online Diagram Software and Flowchart Maker for Windows PC

  -  Freeware
  • Latest Version LATEST

  • Review by

    Juan Garcia

  • Operating System

    Windows 7 / Windows 8 / Windows 10 / Windows 11

  • User Rating

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  • Author / Product

    JGraph Ltd / External Link (formerly is an advanced online diagram editing and storing web application that allows teams of all sizes to take full control over their diagram files, create any type of diagram in minutes, and supercharge daily workflow with built-in collaboration tools.


This open-source tool offered by developers at strives to provide top-of-the-line diagram project management for users of all knowledge levels, with a wide array of streamlined tools and extensive integrations with 3rd party services. The app supports everything from simple sketches to professional diagrams.

Due to its flexibility, for Windows PC can be used for any type of diagram imaginable – flowcharts, roadmaps, timelines, Ven diagrams, gitflow, Kanban, dependency, C4 models, UML diagrams (case, class, sequence, components, structure, deployment, activity, and state), IT and infrastructure diagrams, various mockups, and wireframes, security, product design, organizational charts, tree diagrams, mind maps, concept maps, circuit and logic diagrams, fishbone (ishikawa) diagrams, cross-functional flowchart, business and marketing diagrams, Gantt charts, infographics, illustrations, floorplans, and many others.

Offered both as a webapp on the official website and as a standalone Windows PC application, offers its users unprecedented flexibility. The app has a full integration capability with a wide array of 3rd party tools and services, including storage platforms such as Google Drive, Dropbox, OneDrive, and GitHub, productivity and task tracking platforms Microsoft 365, Google Workspace, Confluence Jira, Notion, and Nextcloud, and a wide variety of additional apps and web solutions.

How to Use?
  • Click on "Start Diagramming" to open the editor
  • Choose a template or start with a blank page
  • Use the toolbar on the left to select and add shapes, lines, and other elements to your diagram
  • Use the formatting options on the right to customize the appearance of your diagram
  • Save your diagram to your computer or to cloud storage services like Google Drive or OneDrive
  • Share your diagram with others by exporting it or by sharing a link to the file.

Share with everyone
Don't worry about licenses or platforms, it just works.

Powerful features
Collaborate with shared cursors in real-time. has everything you expect from a professional diagramming tool.

Google Workplace and Google Drive
Works with Google Drive and Google Workplace (G Suite). Use add-ons for Docs, Sheets and Slides.

Sharepoint and OneDrive
Works with OneDrive and Sharepoint. Office 365 and Microsoft Teams apps provide tighter integration.
Highest-rated Confluence app, delivered by Also for Jira.

Git and Dropbox
Works with GitHub, GitLab, and Dropbox for visual documentation in distributed teams

Embed and edit diagrams directly with the for Notion Chrome extension.

The local PC client app version of is distributed as an automated installer that can easily be deployed on any modern Windows PC (Windows 7 and newer). The app features a clean and streamlined interface, with an extensive library of pre-made wireframe objects found on the left side of the dashboard, and a large canvas where users can drag & drop diagram objects and carefully customize every element.

Shapes library can be explored manually with 11 drop menus (General, Advanced, Arrows, Flowchart, and others) or with a built-in search tool. The app offers extensive customization options, arrangement tools, and an export service that supports many file formats.

  • Advanced diagram editing and storing
  • Built-in collaboration tools
  • Flexible and supports many types of diagrams
  • Extensive integrations with 3rd party services
  • Free for personal and commercial use
  • None (formerly is 100% FREE and can be used both for personal and commercial use. In addition to the Windows PC app, the exact editor is also available as a mobile app, webapp, or as an embedded module that can be infused into any web destination.