A web-based flowchart & diagram tool with Excalidraw's feel and a shape library broad enough for architecture, BPMN, UML, and network diagrams. No account. No install. Works in any browser.
Open-format exports. Optional signed diagrams for audit trails.
The URL is the document. The keyboard is the interface. Your diagram is yours.
Rectangle, diamond, arrow — all one keystroke. Like Excalidraw, but with the shape breadth of a full diagramming tool.
AWS icons, BPMN notation, UML class diagrams, network shapes, org charts, wireframes. Not just boxes and arrows.
Diagrams live in the URL fragment or a short-link ID. Sharing is a copy-paste away. No "share dialog" friction.
Open the site, draw, export. Accounts only exist for named-save and team features — opt-in, never required.
SVG, PNG, PDF, Mermaid source. All first-class. Nothing hidden behind a premium tier.
The MVP runs entirely in your browser. Your diagrams never touch a server unless you choose to save one.
Paste Mermaid source, see the diagram. Edit visually, get updated source back. Engineers live in Mermaid inside READMEs and wikis — VeritaChart speaks that dialect natively.
%% paste this in, get the diagram → flowchart LR A[user request] --> B{auth?} B -->|yes| C[issue token] B -->|no| D[return 401] C --> E[(session store)]
Every format is first-class. No "premium-tier export" paywall — these are table stakes for a diagram tool.
For the times a diagram is an artifact, not a doodle — an approved architecture, a signed-off process, a reviewed schematic — export it as a signed SVG or PDF.
Anyone with the file can later verify: "this is the exact diagram the team approved on April 12, signed by the architect's key." Uses the same Ed25519 signing primitives as the rest of the family.
Off by default. Nothing you draw gets signed unless you ask.
# from the editor's export menu, or CLI: $ verita chart sign diagram.svg --key ~/.verita/ed25519 ✓ signed → diagram.signed.svg author: arch-team@acme at: 2026-04-12T14:22:07Z sha256: a3f1c2…9b4e $ verita chart verify diagram.signed.svg ✓ valid signature by: arch-team@acme unchanged since signing
VeritaChart is the utility-app sibling. Useful on its own; better when the diagrams you draw need to be signed, shared, and attested.