Launched 2023 · Verified Oct 22, 2026

DGM

Discontinued

The site's security certificate is invalid. Other discontinued tools

Diagramming & Whiteboards1Write a reviewSouth KoreaEffect36/ 100

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Browser-based diagramming tool with smart shapes, real-time collaboration, and AI code generation from sketches.

diagrammingumlflowchartsai code generationwhiteboardFree

Listed on EffectHub · Sep 1, 2026

Web

Screenshot of the DGM website — dgm.sh as we captured it — our own screenshot, not the vendor’s press image.

Pricing

Pricing model: 100% Free

Only a free tier is live today: unlimited local use, 3 documents in the cloud, and 7 days of revision history. A paid plan is listed as coming soon with no price shown yet.

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Overview

About DGM

DGM is a web diagramming tool built by MKLabs, the South Korean company behind the UML modeler StarUML. It offers smart shape libraries for UML, ERD, and flowcharts, a sketch mode for freehand notes, real-time multiplayer editing, and a Vision AI feature that reads a diagram or sketch and generates matching code. Local files are free forever, including image export and access to public shape libraries; using DGM's cloud storage adds document limits and version history. A paid tier is announced as coming soon but is not yet purchasable.

Platforms: Web
API: Not confirmed
Last verified: Oct 22, 2026

Verified sources

Feature set, free-forever local use, cloud limitsdgm.sh ↗
Only a free plan is live; paid plan coming soondgm.sh ↗

Fact check

Is DGM legit?

We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.

TLS certificate: Issued by Google Trust Services, refused at our last checkOur own connection to the site on Oct 22, 2026 was refused over the certificate
Last checked: Oct 22, 2026The site no longer answers
On the market since: 2023The vendor's own material, read by us
Operated by: MKLabs, South KoreaOur research, card verified Sep 1, 2026

How we collect these records

Editorial verdict

Pros & cons of DGM

medium confidence

DGM is worth a look for anyone who wants a free diagramming canvas with real-time collaboration and doesn't mind that cloud storage is capped until a paid plan ships. The Vision AI code-generation feature is the differentiator versus older diagram tools, though it is unproven at scale since the product is still in beta.