Diagram Editors for Windows

Privacy-focused diagramming software supporting real-time collaboration, offline mode, and cloud storage without ads or registration.

Web-based vector graphics editor with desktop apps, focusing on real-time collaboration and version control for UI/UX design.

Draw 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.

Pencil is a standalone app that lets you create diagrams or UI mockups. It doesn't have collaboration/multi-user features.

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...

Open-source diagram editor with cross-platform support offering entity relationship, UML, flowchart, and network diagram creation with editable objects.

A scalable tool for real-time and asynchronous team collaboration across devices with an infinite canvas, suitable for strategy planning and real-time feedback.

DeepNotes is an open source, end-to-end encrypted visual note-taking app with deep page navigation and live collaboration. Create mind maps, diagrams, kanban boards, among others. Infinite nesting of infinite canvases.

Easily create data-connected diagrams with real-time collaboration, part of Office Suite. Ideal for IT and business professionals visualizing complex info.

LimanDoc is a simple yet powerful tool for visualize files, diagrams, and construct a mind map with the possibility to edit Markdown text. It is an offline first desktop app with a 2D canvas that allows a preview of the inner folders (boards).

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.

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.

Whimsical is a collaborative visual workspace for creating flowcharts, wireframes, virtual sticky notes, and more!.

Digital graph paper for diagrams, technical sketches and geometric art.

Graphviz is open source graph visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics, software engineering, database and web design...

Lorien is an infinite canvas drawing/note-taking app that is focused on performance, small savefiles and simplicity. It's not based on bitmap images like Krita, Gimp or Photoshop; it rather saves brush strokes as a collection of points and renders them at runtime (kind of...

Visual Paradigm for UML (VP-UML) is a UML design tool and UML CASE tool designed to aid software development. VP-UML supports key modeling standards such as Unified Modeling Language (UML) 2.4, SysML, ERD, DFD, BPMN 2.0, ArchiMate 2.0, etc.

Penrose is a platform that enables people to create beautiful diagrams just by typing mathematical notation in plain text. The goal is to make it easy for non-experts to create and explore high-quality diagrams and provide deeper insight into challenging technical concepts.

Heimer is a desktop application for creating mind maps and other suitable diagrams. It's written in Qt and targeted for Linux and Windows.

A 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.

Gaphor is a WYSIWYG (What You See Is What You Get) UML and SysML modeling environment easy to use that will help you create your applications.

ProcessOn is a free online drawing tool that supports the creation of mind maps, flow charts, swimlane diagrams, network topology diagrams, fishbone diagrams, UML and other graphics.

Create flowcharts (and mind maps) without worrying about layout with QuikFlow. With our innovative interactive layout algorithms, you can work as if you were using a mind mapping application while creating flowcharts. Define your structure and the app handles the layout!

Create flowcharts, UML, Venn, and mind map diagrams with customizable templates, a drag-and-drop editor, and export options for sharing visual data easily.

EDGE Diagrammer is a diagramming tool for creating various types of diagrams including block diagrams, flowcharts, and organizational charts. It automatically connects lines to figures, adjusts when objects are moved, and modifies shape size when text is added.