CorriDraw CorriDraw
Features 28 + 14

28 diagrams + 14 charts. One canvas .

Sketch one freehand, paste source for another, drop a CSV for the third. Every shape comes out real and editable — and a live room of teammates can edit alongside you.

Start drawing — it’s free See collaboration
28
Diagram types
Mermaid + freehand →
14
Chart types
CSV → live chart →
∞
Collaborators
Real-time multiplayer →
Real-time collaboration

Draw together, even when you’re apart.

Share a link. Your teammate opens it and starts drawing right next to you — same canvas, same second. No setup, no plugins, no awkward screen-share.

Captured from a real session. Maya’s viewport — Alex’s cursor (with his photo and name pill) and his shapes appear in her room as he draws them. Twelve shapes, six arrows, two browsers, one canvas.
Comments where the conversation is. Click the canvas to leave a comment exactly where you mean it — so “this arrow looks wrong” actually points at the arrow. React with 👍 ❤️ ✅, reply in threads, and the pin turns green when it’s sorted.

See where everyone is

Each teammate has a coloured cursor with their name on it. You can tell who’s reading, who’s editing, and who stepped away for coffee — without anyone saying a word.

Walk the room through a diagram

Click a teammate’s face and your screen rides along with theirs — great for showing someone around. Or grab the laser pointer and your cursor leaves a glowing trail so the room knows where to look. No screen-share required.

Wi-fi went out? Keep drawing.

Lose your connection mid-edit and CorriDraw keeps going. The moment you’re back online, everything you did syncs up like nothing happened. Set share links to view-only or let anyone edit, and revoke them whenever you like.

Bring a friend
Source → diagram

Paste the source. Get the diagram.

If you already write Mermaid or PlantUML, drop it into the dialog and CorriDraw turns it into editable shapes (Mermaid) or a faithful Mermaid-styled image (PlantUML) on your canvas — ready for you to rearrange, restyle, or annotate.

Mermaid renders as native, editable shapes
Six lines in, a real diagram out. Flowchart, sequence, class, ER, state, and more — the parser turns each shape into a regular CorriDraw element you can move, restyle, and connect like anything else.
PlantUML faithful PlantUML rendering on the canvas
Every PlantUML diagram, on the canvas. Sequence, class, activity, component, deployment — whatever PlantUML can render, you can drop into CorriDraw and annotate. Rendered through PlantUML’s own engine for fidelity.

Mermaid import docs · PlantUML import docs

CSV → chart

Drop a spreadsheet. Get a chart.

Pull the chart tool out of the toolbar, drag a CSV onto the empty card, and the data arrives as a live, themed chart on the canvas — not a screenshot, not a placeholder. Switch between line, bar (grouped, stacked, or horizontal), area (overlay, stacked, or step), pie, scatter, composed, radar, radial, treemap, or funnel from the side panel and the chart re-renders against the same data.

Chart element live Recharts on the canvas
From .csv to chart in two drops. CSV lives inside the diagram — it travels through save / reload / copy-paste / undo. Theme follows your light or dark canvas. Pin one series to a right-hand axis when scales clash, recolour each series, swap to any of fourteen chart types, and the data on screen stays the same.
Chart catalog

Pick a chart. See it on the canvas.

Every card opens the editor with the chart pre-seeded against a sample dataset — swap columns, recolour series, or paste your own CSV right on top.

Try demo

Line

Trends over time across multiple series

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Bar

Compare categories side-by-side

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Stacked bar

Layer series so totals add up per bar

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Horizontal bar

Long category names along the Y axis

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Area

Filled trends — emphasis on volume

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Stacked area

Layered volumes that add to a total

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Step area

Discrete jumps instead of smooth curves

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Pie

Slice proportions of a whole

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Scatter

Dots for points — spot correlation and clusters

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Composed

Mix bars, lines, and areas on one frame

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Radar

Compare profiles across many axes

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Radial bar

Concentric bars around a centre

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Treemap

Nested rectangles sized by value

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Funnel

Stage drop-off from top to bottom
Diagram catalog

Pick the diagram. Pick the path.

Sketch from scratch on the infinite canvas, or paste source and watch it parse into editable shapes. Every one renders with the same hand-drawn look.

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Activity

Workflow with start, end, and decisions

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Architecture

Services, queues, and the arrows between them

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Block

Layered grid of labelled blocks

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C4

System / container / component architecture views

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Class

Object structure with attributes and inheritance

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Component

Components with provided / required interfaces

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Deployment

Nodes hosting the artifacts that run on them

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ER

Entities and crow's-foot relationships

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Flowchart

Decision logic with branching arrows

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Gantt

Time-bar plan with task durations

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Git graph

Branches, merges, and commits over time

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JSON tree

Nested key-value structure visualised

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Kanban

Sticky notes and swim-lanes that grow with content

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Mind map

Radial branches from a central topic

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Network

Devices and the links between them

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Object

Instance snapshots with attribute values

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Org chart

Hierarchy of people, teams, and reports

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Quadrant

2×2 axis matrix for classification

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Requirement

Boxes for requirements + satisfies / derives

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Sankey

Proportional flows between categories

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Sequence

Actors and lifelines for time-ordered messages

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State

States and transitions, finite-state machines

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Timeline

Horizontal axis of events grouped into eras

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Timing

Signal waveforms over a shared timeline

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Use case

Actors and ellipses for system behaviours

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User journey

Path with emotional valence at each step

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WBS

Work-breakdown tree by phase and task

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Wireframe

Low-fidelity UI sketches, deliberately rough

Don't see your diagram? The canvas is open — sketch anything. Source-driven diagrams use Mermaid or PlantUML; the rest are first-class shapes you arrange by hand. How text-to-diagram works.

Open a canvas. Pick a diagram.

Free forever plan. No credit card. Bring a teammate or two — the room is already open.

Open the editor