Best Open Source LucidChart Alternatives

Excalidraw is a virtual whiteboard tool that allows teams to easily create and share sketches with a unique hand-drawn aesthetic.

Create, collaborate, and brainstorm instantly with this free virtual whiteboard. No signup needed. Works seamlessly on mobile, tablet, and desktop devices.

Free online database diagram editor with SQL generation. Create ER diagrams, visualize relationships, export scripts, and reverse engineer schemas - no signup required.

Create professional diagrams online or offline with security-first approach. No registration needed. Works with Google Drive, SharePoint, Atlassian, and more.