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.



Excalidraw is described as '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 vailable for self-hosting' and is a very popular Diagram Editor in the photos & graphics category. There are more than 50 alternatives to Excalidraw for a variety of platforms, including Web-based, Windows, Mac, Linux and Android apps. The best Excalidraw alternative is draw.io, which is both free and Open Source. Other great apps like Excalidraw are Xournal++, LibreOffice - Draw, Miro and Dia.
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.



Draw, part of the Apache OpenOffice suite, is a graphics editor that gives you the tools to communicate with visuals and diagrams. With a maximum page size of 300cm by 300cm, Draw is powerful tool for posters, graphs, charts, and more.



Instead of starting with a blank screen, SmartDraw gives you the exact template you need. Then use simple commands to add your information and SmartDraw does the rest. There's no other drawing software like it.




Create beautiful diagrams in minutes. Simple syntax. Endlessly customizable. D2 is the fastest and easiest way to get a mental model from your head onto the screen, then make edits with your team.




Jamboard is a creative collaboration experience that helps bring your team's ideas to life. The app offers distinct features based on the device you're using.




Web-based diagram platform offers real-time teamwork, 50+ diagram and mind mapping types, technical wireframing, smart objects, templates, version control, secure cloud storage, PDF export, collaboration tools, commenting, and integration for business and education use.




SpeedyNote is a fast, open-source note-taking application designed for stylus users who need iPad-quality annotation on budget hardware. Built with native C++ and Qt, it delivers 360Hz stylus input on hardware as modest as an Intel Celeron N4000 at 1.



Grafio allows you to make flow charts, org charts, Venn diagrams, mind maps, take notes, sketches and do other diagrams. Everything is custom and modifiable.



Kinopio is a visual thinking tool for new ideas and hard problems. Used for note taking, planning, journaling, and diagramming – by yourself or collaboratively.




"If they could see what Im thinking, they'd get it!" People just understand faster with pictures. It helps them see how information is connected, whether it is complete, and how a shift in one element impacts something else.



Eraser is an all-in-one ideation tool for distributed teams. Eraser allows users to communicate ideas at the speed of thought using a markdown note editor, a lightweight canvas. Use Eraser for brainstorming, diagramming, wireframing, and interviewing!



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.
