draw.io is described as 'Privacy-focused diagramming software supporting real-time collaboration, offline mode, and cloud storage without ads or registration' and is a leading Diagram Editor in the development category. There are more than 100 alternatives to draw.io for a variety of platforms, including Web-based, Windows, Mac, Linux and SaaS apps. The best draw.io alternative is Dia, which is both free and Open Source. Other great apps like draw.io are Excalidraw, LibreOffice - Draw, yEd Graph Editor and TreeSheets.
Lucidchart is a cloud-based platform that promotes teamwork through diagramming, collaboration, and data visualization. It serves millions worldwide, offering flowcharts, UML, real-time collaboration, Visio support, and browser access. Designed for innovation and understanding, it integrates easily into workflows.
Open-source diagram editor supporting Linux, Windows, Unix, and Mac OS X, with features for constructing entity relationship, UML, flowchart, and network diagrams, customizable with XML-defined shapes, extensibility, and a GTK+-based graphical user interface.
Very intuitive, flexible and well defined.
Excalidraw is an open-source whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them. Available directly online as a web app and also through CodeSandbox to easily see how the code works, and the app is available for self-hosting.
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.
LibreOffice Draw is a more fully-featured and customizable application than draw.io in my opinion. The main reason I think it is better, though, is because it is a native application, rather than something that forces you to use it online.
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...
A "hierarchical spreadsheet" that is a great replacement for spreadsheets, mind mappers, outliners, PIMs, text editors and small databases.
Lucidchart is a cloud-based platform that promotes teamwork through diagramming, collaboration, and data visualization. It serves millions worldwide, offering flowcharts, UML, real-time collaboration, Visio support, and browser access. Designed for innovation and understanding, it integrates easily into workflows.
Essentially the same functionality but with a much slicker interface.
Open-source PWA for isometric 3D diagramming with offline use, no sign-in, React and Isoflow codebase, auto-saving, privacy-focused local data, import/export as JSON, Docker optional storage, multilingual support, available on Mac and Linux.
Create data-connected diagrams with real-time collaboration as part of the Office Suite. Ideal for IT and business professionals, it visualizes complex info with ease, providing intuitive tools for diagramming, mind mapping, and vector graphics.
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.
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.
Whimsical is a collaborative visual workspace for creating flowcharts, wireframes, virtual sticky notes, and more!.
tldraw is a collaborative digital whiteboard available at tldraw.com. Its editor, user interface, and other underlying libraries available in this repository and also distributed on npm. You can use tldraw to create a drop-in whiteboard for your product or as the foundation on...
United States
Czechia
EU
Germany
Netherlands
France
Has not been updated since 2014. Was fine at that time, now (2024, ten years after) it's kind of obsolete at least for serious work.