Free Sequence Diagram Tool

Draw UML Sequence Diagram in a free, web-based UML drawing tool

Finding a Free Sequence Diagram Tool?

UML drawing tool - Visual Paradigm Online (VP Online) Free Edition. Unlike many other online drawing tools, VP Online has incorporated the Resource Centric interface, which makes Sequence Diagram editing very intuitive and straight forward. The free UML editor comes with no ad, no limited period of access and no limitations such as, number of diagrams, number of shapes, etc. You own the diagrams you created for personal and non-commercial purposes.

Online Sequence Diagram Tool
Make a Sequence Diagram

Drawing Sequence Diagram can be simple and fun

Free UML Editor

Free Sequence Diagram tool for personal use:

  • No limited number of diagrams and shapes
  • No limited period of access
  • No ad

Draw as many diagrams as you like. Output the diagrams into PNG/JPG/GIF/SVG/PDF.

Powerful Drawing Tool

UML diagramming can be simple and fun. Here are some of the features of our Sequence Diagram editor:

  • Drag-to-create lifeline and sequence messages
  • Well attached connectors (no separate apart when moving lifelines)
  • Draw your own diagrams with your own shapes
  • Hundreds of diagram examples and templates

Impressive Drawing

Position lifelines and connectors precisely using the alignment guide. Format your Sequence Diagram with different formatting tools: Shape and line format, font style, shape alignment and distribution, embed image and URL, shadow effect, etc

Key features and benefits

Key features and benefits
  • Unlimited period of access
  • Unlimited number of diagrams
  • Unlimited number of shapes
  • UML Tool, ER Diagram Tool, Organization Chart Maker, Floor Plan Designer, ITIL, Business Concept Diagram
  • Can be upgraded to paid editions for more diagram types and features
  • Cross-platform: Windows, Mac, Linux. Compatible with all web browsers
  • Easy to use: Create and connect shapes with drag and drop. Connectors will snap to shapes and never separate apart.
  • Apply different formatting options (shape and lines, solid and gradient paint), 40+ connector types, RTF caption, font options, shadow effect, etc
  • Draw your own diagrams with your own shapes.
  • Visio drawing and stencil import
  • Get start quickly with hundreds of diagram examples and diagram templates
  • Print, export and share your work in different formats (PNG, JPG, SVG, GIF, PDF)
  • Easily embed text, external images and web links to diagram
  • Save diagrams in Google Drive

But don't take our word for it

Try it yourself. Just browse the Sequence Diagram examples below and click Open Diagram to open and edit. You will see for yourself that it is everything we say it is, or perhaps more.

Sequence Diagram Example: Book a Seat

Open Diagram

Sequence Diagram Example: Book a SeatOpen Diagram

Sequence Diagram Example: Bank Quote

Open Diagram

Sequence Diagram Example: Bank QuoteOpen Diagram

Sequence Diagram Example: Hotel Reservation

Open Diagram

Sequence Diagram Example: Hotel ReservationOpen Diagram

Sequence Diagram Example: Appointment

Open Diagram

Sequence Diagram Example: AppointmentOpen Diagram

Sequence Diagram Example: Place Order

Open Diagram

Sequence Diagram Example: Place OrderOpen Diagram

Sequence Diagram Example: Poke Player

Open Diagram

Sequence Diagram Example: Poke PlayerOpen Diagram

Other Solutions

Start Drawing Your Free Diagram Today

No limitations, no obligations, no cancellation fees.


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