What is the difference between FigJam and PlantUML?

FigJam is best for Figma users wanting collaborative brainstorming and diagramming, while PlantUML is best for Software architects who need comprehensive UML diagram support. FigJam starts at Free and PlantUML starts at Free.

Is FigJam or PlantUML cheaper?

FigJam starts at Free with a free tier. PlantUML starts at Free and is free.

Is there a free alternative to PlantUML?

Both FigJam and PlantUML offer free tiers.

FigJam vs PlantUML

FigJam is collaborative whiteboard from Figma for brainstorming, diagramming, and workshops, while PlantUML is open-source tool for creating UML diagrams from plain text descriptions. PlantUML is open source and can be self-hosted, giving you full control over your data. FigJam is built for figma users wanting collaborative brainstorming and diagramming, whereas PlantUML targets software architects who need comprehensive uml diagram support.

At a glance

	FigJam	PlantUML
Best for	Figma users wanting collaborative brainstorming and diagramming	Software architects who need comprehensive UML diagram support
Starting price	Free	Free
Free tier	✓	✓
Open source	—	✓
Free tier available	✓	✓
Open source	—	✓
IDE integration	—	✓
Open source	—	✓
Sticky Notes	✓	—
Text-based	—	✓
UML diagrams	—	✓
Voting	✓	—
Whiteboard	✓	—
Widgets	✓	—

FigJam

Strengths

Infinite whiteboard canvas for brainstorming and visual thinking
Sticky notes and drawing tools make remote workshops feel hands-on
Free for 3 FigJam files — generous enough for most small teams to get real work done
Includes voting alongside the core feature set — fewer separate tools needed

Weaknesses

Free plan exists but key features are locked behind the paid upgrade
Fewer built-in features means you may need additional tools to cover gaps
Ecosystem of third-party integrations is smaller than the market leaders in diagramming
Relatively new (founded 2021) — the feature set and integrations are still maturing

Try FigJam → Full review

PlantUML

Strengths

Most comprehensive UML support of any diagramming tool
Text-based format integrates with version control
Wide IDE support (VS Code, IntelliJ, Eclipse)
Active community with 15+ years of development

Weaknesses

Steep learning curve for the text syntax
Output style is functional but not aesthetically modern
Layout control is limited — auto-layout can produce awkward results
Less suitable for non-UML diagram types

Try PlantUML → Full review

The bottom line

Pricing: Both FigJam and PlantUML are free. You can try both without spending a dollar.

Feature gaps: FigJam offers Sticky Notes, Voting and Whiteboard that PlantUML lacks. PlantUML brings IDE integration, Open source and Text-based that FigJam does not have.

Open source: PlantUML is open source, meaning you can self-host, audit the code, and avoid vendor lock-in. FigJam is proprietary — you are trusting the vendor with your data and uptime.

Where each tool shines: FigJam's biggest strengths are: infinite whiteboard canvas for brainstorming and visual thinking. sticky notes and drawing tools make remote workshops feel hands-on. PlantUML's biggest strengths are: most comprehensive uml support of any diagramming tool. text-based format integrates with version control.

Watch out for: With FigJam, users commonly note that free plan exists but key features are locked behind the paid upgrade. With PlantUML, the main complaint is that steep learning curve for the text syntax.

Choose FigJam if...

You need a tool built for figma users wanting collaborative brainstorming and diagramming
You specifically need Sticky Notes and Voting
You care about sticky notes and drawing tools make remote workshops feel hands-on
The free tier works for you: free for 3 figjam files

Choose PlantUML if...

You need a tool built for software architects who need comprehensive uml diagram support
You need self-hosting, data sovereignty, or the ability to audit source code
You specifically need IDE integration and Open source
You care about text-based format integrates with version control