The best alternative to Lucidchart is Excalidraw, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Lucidchart and 16 are so hopefully you can find a suitable replacement. Other interesting alternatives to Lucidchart are LibreOffice - Draw, yEd Graph Editor, Freeplane and PlantUML.
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.
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...
Freeplane is a powerful and free software for building mind maps. It is a redesigned version of the well known FreeMind , and is created by one of FreeMind's key developers.
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.
Mindomo is the easiest online software for creating mind maps, concept maps, outlines and various other types of diagrams. The following features make it the perfect choice both for business and education:
Mind mapping helps you organize your thoughts, remember information and generate new ideas. We've created a beautiful, intuitive app, so you can mind map wherever you are and whenever you want.
Digital graph paper for diagrams, technical sketches and geometric art.
VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts. Such maps can help you to improve your creativity and effectivity. You can use them for time management, to organize tasks, to get an overview over complex contexts, to sort your ideas etc.
TiddlyMap is a TiddlyWiki plugin that turns your favourite personal note taking software in a wiki-concept-map hybrid! Yes, you will be able to do both: drawing maps and putting down knowledge in a wiki way.
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.
Chunk is your time-blocking command center. Plan tasks with precision, get fullscreen alerts, and stay in flow all day. Built for focus, with calendar integration that fits your workflow.
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