WBO is an online collaborative whiteboard that allows many users to draw simultaneously on a large virtual board. The board is updated in real time for all connected users, and its state is always persisted.



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 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 free. Other great apps like Excalidraw are Xournal++, LibreOffice - Draw, Miro and Dia.
WBO is an online collaborative whiteboard that allows many users to draw simultaneously on a large virtual board. The board is updated in real time for all connected users, and its state is always persisted.



The minimalistic online drawing app. It allows you to create visual notes (drawings) and organize them in the nested "drawing inside the drawing" structure for faster lookup. Allows creating fast sketches and visual notes. Exports sketches to PNG, JPG, SVG, and WEBP.




Vecta is a cloud-based collaborative diagramming tool that boosts productivity and increase effectiveness for team communication.


Lightweight, powerful, easy to use, UML tool
Software Ideas Modeler is a lightweight and powerful CASE tool. It supports UML 2.2 diagrams and a lot of other ones. Software Ideas Modeler is freeware (for non-commercial use). Commercial user may use this software only after buying.

Scapple is an easy-to-use tool for getting ideas down as quickly as possible and making connections between them. It isn’t exactly mind-mapping software—it’s more like a freeform text editor that allows you to make notes anywhere on the page and to connect them using straight...



A online collaborative whiteboard without the learning curve. It's super easy to use, allows your team to collaborate with anybody within or outside of your organization. Never lose a board again, organize your teams in workspace, products. Free Plan.


Grapholite is a powerful online solution for the creation of flowcharts, org charts, mind maps, Venn charts, web site structures, etc. Can be used online and offline


Whether you’re working on a school poster or brainstorming your next comic book character, Sketchpad makes it easy to bring your ideas to life. Easily draw, edit photos, or design your next business card. Craft images for social media posts, digital ads, paper, or even apparel.

Moredraw is a thought recording whiteboard with multiple types of nodes built in, including flowcharts, mind maps, pictures, notes, videos, to-do lists, charts, etc. Any node can be linked to help you organize your thoughts.

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!



scrumblr - Collaborative Online Scrum (whiteboard + kanban) Tool Using Websockets, Node.js, jQuery, and CSS3

A Powerful idea processor.It's Open Source and Freeware. Create UML Diagrams, Network Diagrams, Flowcharts and many other types of diagrams with the versatile Dynamic Draw Software.



