Slatebox

Create custom visuals, access pre-built templates, and collaborate in real-time.

Free plan available
No credit card

What is Slatebox?

Slatebox is a visual collaboration tool for creating diagrams, flowcharts, and other custom graphics. It combines a blank canvas with pre-built templates, letting teams sketch ideas or start from structured formats. The real-time collaboration features mean multiple users can work on the same visual simultaneously, making it useful for remote teams and distributed workshops. Rather than forcing you into a specific diagram type, Slatebox gives you flexibility to draw freely or use templates as starting points. The tool sits somewhere between a freeform whiteboard and a structured diagramming application.

Key features

Custom visual creation

draw and design graphics from scratch using a flexible canvas

Pre-built templates

access ready-made diagram types to speed up common tasks

Real-time collaboration

multiple users can edit the same visual at the same time

Comments and annotations

leave feedback directly on visuals without separate tools

Export options

save and share your work in different formats

Pros & cons

Advantages

Freemium model means you can test it without paying upfront
Real-time collaboration works well for distributed teams
Flexibility to mix freeform drawing with structured templates
Straightforward interface without unnecessary complexity

Limitations

Feature set may feel limited compared to specialised diagramming tools if you need advanced capabilities
Free tier likely has restrictions on file numbers, storage, or team size