The free Lucidchart alternative, with no limits

Lucidchart’s free plan is a real way to try it, but it caps how many documents you can edit and how many shapes each one holds, so a growing diagram soon meets a paywall. livediagram has no caps and no paid tier: every document can be as large as it needs to be, and every feature is free for everyone. You do not even need an account to start.

livediagram ships 91 templates, including flowcharts in four styles, swimlanes, org charts, mind maps, data-flow diagrams, system and cloud architecture, database schemas, and sequence, class and state diagrams. Shapes and arrows stay attached and re-route as you move things, alignment guides and snapping keep layouts tidy, and themes restyle the whole canvas in one click.

Bigger work splits across tabs inside one document, grouped into folders, with Photoshop-style layers on each tab. Presentation mode turns elements from any tab into a slide deck, so you can walk a room through a diagram without exporting it.

Lucidchart has spent years on formal notation, and it shows: its libraries for BPMN, network diagrams and cloud providers are far broader than ours, it can generate diagrams from data, and it reads and writes Visio files. If your work depends on those, Lucidchart is the better tool. livediagram aims at the everyday diagrams most teams draw, and makes them free, fast and collaborative.

livediagram imports draw.io, Excalidraw, Microsoft Whiteboard, Mermaid and Markdown, and exports PNG, SVG, PDF, Mermaid, Markdown, Excalidraw or portable JSON. Any share link embeds as a read-only, live-updating iframe in Confluence, Notion or any page that allows iframes.

For automation there is a free REST API with personal tokens and an MCP server that lets AI assistants read and edit your documents directly, with their changes shown live and undoable as one unit.