WebSequenceDiagrams

WebSequenceDiagrams

WebSequenceDiagrams is an online tool for easily creating UML sequence diagrams. It has a simple syntax for defining objects, messages, notes, and other sequence diagram elements. The service is free to use and diagrams can be exported as images.
WebSequenceDiagrams image
uml sequence-diagrams online-tool diagramming

WebSequenceDiagrams: Online UML Sequence Diagram Tool

Free online tool for creating UML sequence diagrams with a simple syntax, exporting diagrams as images, and no limits on usage.

What is WebSequenceDiagrams?

WebSequenceDiagrams is a free online application that allows users to easily create UML sequence diagrams. It has an intuitive syntax that lets you define objects, lifelines, messages passing between objects, notes, and other elements of a sequence diagram. The syntax is very easy to learn and use.

Some key features of WebSequenceDiagrams:

  • Free to use, no login required
  • Intuitive simple syntax for defining diagram elements
  • Real-time rendering of sequence diagrams as you type
  • Ability to save and share diagrams using short URLs
  • Export diagrams as PNG or SVG images
  • Customize colors, fonts, styles
  • Embed diagrams in other web pages
  • Open source and self-hosted options available

If you need to create sequence diagrams for documentation, presentations, or technical specifications, WebSequenceDiagrams provides an easy browser-based option requiring no special software installs. The simple text-based syntax makes it fast and efficient for describing object interactions. With free online and self-hosted options, it's a good open source sequence diagramming tool.

WebSequenceDiagrams Features

Features

  1. Allows creating UML sequence diagrams online
  2. Simple syntax for defining objects, messages, notes, etc
  3. Supports common UML elements like alt, loop, opt, par, break
  4. Diagrams can be exported as PNG images
  5. Real-time collaboration - multiple users can edit the same diagram
  6. Public and private diagrams - share or keep diagrams private
  7. Customizable themes and styles
  8. API available for generating diagrams programmatically

Pricing

  • Free

Pros

Easy to use

Intuitive syntax

Collaborative editing

Free to use with no limits

No installation required

Platform independent - works on any device with a browser

Cons

Limited customization compared to desktop apps

No offline usage

Only supports sequence diagrams, not other UML diagram types

Formatting options are limited


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