Diagramo is an online flowchart software. It's FREE and Open Source ( GPL ) It's pure HTML5 Share and collaborate. Developed by Diagramo
License: Open Source
Diagramo is a user-friendly, free tool ideal for basic diagramming needs, while Moqups offers a more robust feature set, including real-time collaboration and mobile compatibility, making it suitable for more complex projects. The choice between them depends on the user's specific needs, budget, and the complexity of the diagrams they wish to create.