Skip to content
ToolGPA

The WebSequenceDiagrams Insider’s Guide

Everything we know about WebSequenceDiagrams in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.

Download the PDF
Pass it onEmailLinkedInXWhatsApp
ToolGPANovember 2026

WebSequenceDiagrams

The Insider’s Guide

Text-to-diagram sequence diagram maker with its own layout engine

Every plan, grade, refund rule and rival among whiteboard and mind map tools, read from WebSequenceDiagrams’s own pages.

Made by Hanov Solutions Inc. · checked Nov 13, 2026 · toolgpa.com

2.4GPA

Contents

  1. 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
  2. 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
  3. 03What it doesIts main features, where it runs, what it works with and who makes it
  4. 04Where it standsIts grades against its category, and whether to keep it or make your own
  5. 05The alternativesThe tools it is most often weighed against, side by side
  6. 06Quick answersThe questions people ask about it, each answered in a line or two
  7. 07About ToolGPAWho made this guide, what else is on the site, and how to cite it

ToolGPA put this guide together from WebSequenceDiagrams’s own pages, its app-store listings and our grades. Every fact in it is on WebSequenceDiagrams’s page too, where it is kept up to date. Checked Nov 13, 2026.

Part 01 · Overview

Welcome

What it is, who it suits, its grades and the ten things to know first

2.4

GPA, above 43 of the 98 other whiteboard and mind map tools we grade

WebSequenceDiagrams draws sequence diagrams from a short text syntax, using a proprietary layout engine the vendor says runs without Java or Graphviz. It offers a VS Code extension, an MCP connection for AI assistants, HAR file conversion and an Enterprise Server edition for private networks.

To get you started, here are 9 things to know about WebSequenceDiagrams, taken from its own pages and our grades.

You learn a text syntax before the first diagram.
From our grade for ease of use
  1. 1

    Best for sequence diagrams written as text

    WebSequenceDiagrams makes sequence diagrams from text, with a VS Code extension and AI access through MCP.

  2. 2

    Paid plans start at $10 a month

    As its pricing page puts it: $10 per month, billed annually ($15 billed monthly).

  3. 3

    There is a free plan

    WSD Basic: save your work, wider diagrams, revision history and PDF and SVG export.

  4. 4

    It runs on Web

    Web.

  5. 5

    Text-based diagrams

    Diagrams are written as text and the engine lays out actors and messages without manual line routing.

  6. 6

    VS Code extension

    An official extension offers live side-by-side preview, syntax highlighting and snippets inside the editor.

  7. 7

    AI through MCP

    Claude, GitHub Copilot or other MCP-compatible assistants can generate diagram syntax that the engine then lays out.

  8. 8

    A 2.4 GPA, above 43 of 98

    That is against the other whiteboard and mind map tools we grade, on value, the free plan, features, ease of use and platforms.

  9. 9

    Keep it

    Nothing WebSequenceDiagrams does is plain enough to make in a weekend. The 3 things listed below take a company.

WebSequenceDiagrams at a glance

Pricing
Free plan, from $10 per month, billed annually ($15 billed monthly)
Free plan
Yes
Free trial
None stated
Runs on
Web
Made by
Hanov Solutions Inc.
Category
Whiteboards & Mind Maps
Our grade
2.4 GPA, fair

The report card

Best for sequence diagrams written as text

WebSequenceDiagrams makes sequence diagrams from text, with a VS Code extension and AI access through MCP. Free saves your work, but wider diagrams, branding removal and PDF or SVG export need Pro at $10 a month, and it draws nothing but sequence diagrams.

ToolGPA report cardWebSequenceDiagramsGraded Nov 13, 2026
SubjectGradeComment
Value for moneyCWSD Pro is $10 a month billed annually, $15 monthly, against $8.25 in the middle for whiteboard tools. WSD Team is $699 a year for a block of 10.
Free plan and trialBWSD Basic is free and lets you save your work and see revision history. The edge is paid: wider diagrams, PDF and SVG export and no branding.
FeaturesCDoes sequence diagrams fully, plus HAR file analysis and a self-hosted edition. A smaller job than a whiteboard, and branding stays on until you pay.
Ease of useCNo store rating on record. You learn a text syntax before the first diagram.
Platforms and integrationsBWeb, with a VS Code extension and AI access via Claude and GitHub Copilot. No phone app.
Grade point averageFair, out of 4.02.4

An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.

Who WebSequenceDiagrams is for

  • Fits if you write sequence diagrams from text inside VS Code
  • Works for a team of five or more that needs one block of Pro accounts

Who it is not for

  • Skip it if you want freeform whiteboarding: it draws sequence diagrams only
  • Tight if you stay free: wider diagrams and PDF or SVG export are Pro
  • Pricey if you pay monthly: $15 against $10 billed annually
  • Watch out: WSD Team is a block of 10 accounts at $699 a year, and Enterprise Server is $5,999 plus 20% yearly

Good to know

Good for

  • Architects drawing sequence diagrams with many actors
  • Teams that need a self-hosted diagram renderer behind a firewall
  • Developers who prefer to write diagrams from inside VS Code

Worth knowing

  • It makes sequence diagrams only; it is not a freeform whiteboard.
  • Branding is removed only on paid plans.
  • The Team plan is sold as a block of 10 accounts, so it suits five or more users.
  • Enterprise Server is quoted as a site license with 20% yearly maintenance and is sold through sales.

Part 02 · Pricing

What it costs

Every plan, the free plan, ways to pay less and how prices have moved

$10

A month to start. There is a free plan too

WebSequenceDiagrams has a free plan. Paid plans start at $10 per month, billed annually ($15 billed monthly).

WSD Basic is free and lets you save your work and see revision history.
From our grade for free plan and trial

  • WSD Basic

    $0

    Save your work, wider diagrams, revision history and high quality PDF and SVG export.

  • WSD Pro

    $10

    per month, billed annually ($120 a year; $15 billed monthly)

    Removes WSD branding; adds auto-save, parallel flows, auto-numbering and multipage PDF export.

  • WSD Team

    $699

    per year for a block of 10 Pro accounts

    All Pro features for 10 users, with centralized billing and priority email support.

  • Enterprise Server Edition

    $5,999

    site license, plus 20% annual maintenance

    Hosted on your own infrastructure for air-gapped use, with unlimited internal users; sold through sales.

The free plan

WSD Basic: save your work, wider diagrams, revision history and PDF and SVG export.

Read from websequencediagrams.com on Nov 13, 2026.

Ways to pay less

  • Annual discount

    Save 33% with annual billing

    WSD Pro is $10 a month billed as $120 a year, against $15 a month on monthly billing; the pricing toggle labels the annual option as 33% off.

    Stated on websequencediagrams.com

Part 03 · Features

What it does

Its main features, where it runs, what it works with and who makes it

1

Place it runs: Web

Text-to-diagram sequence diagram maker with its own layout engine. Here is what it does, as its own site describes it, and what it covers: self-hostable, public API, AI features, diagrams.

Does sequence diagrams fully, plus HAR file analysis and a self-hosted edition.
From our grade for features
Text-based diagrams
Diagrams are written as text and the engine lays out actors and messages without manual line routing.
VS Code extension
An official extension offers live side-by-side preview, syntax highlighting and snippets inside the editor.
AI through MCP
Claude, GitHub Copilot or other MCP-compatible assistants can generate diagram syntax that the engine then lays out.
HAR file analysis
HTTP Archive files can be converted into sequence diagrams that map cross-origin requests and API calls.
Self-hosted edition
The Enterprise Server edition runs on a company's own infrastructure so diagrams stay on the internal network.

Where it runs

  • Web

What it works with

  • VS Code
  • Claude
  • GitHub Copilot

WebSequenceDiagrams is made by Hanov Solutions Inc.

Part 04 · Standing

Where it stands

Its grades against its category, and whether to keep it or make your own

43/98

Other whiteboard and mind map tools it is graded above

WebSequenceDiagrams's GPA of 2.4 is higher than 43 of the 98 other whiteboard and mind map tools we grade, and level with 14.

It stands best on free plan and trial (B, above 71 of 98) and worst on features (C, above 0).

Its paid plans start at $10 a month, against a middle price of $8 for the category: 49 of the 69 others that charge start lower.

On features, ease of use and platforms it scores 2.3 out of 4. 22 tools score higher and cost less.

Each grade against the category

Every bar is all 99 whiteboard and mind map tools we grade, cut by the letter each got. WebSequenceDiagrams’s own letter is outlined.

  • CValue for moneyAbove 11 of 98
  • BFree plan and trialAbove 71 of 98
  • CFeaturesAbove 0 of 98
  • CEase of useAbove 1 of 98
  • BPlatforms and integrationsAbove 35 of 98

Price against what you get

Each dot is one of 88 whiteboard and mind map tools. Further left costs less; higher up scores better on features, ease of use and platforms. WebSequenceDiagrams is the marked dot.

C2.0B3.0A4.0Free$2$5$10$20$50$100$200$500More for lessCosts more, scores moreCosts less, scores lessCosts more, scores lessWebSequenceDiagramsMiroXmindMicrosoft Whiteboarddraw.ioStructurizr

What paid plans start at, a month (each step along is roughly double) →

Keep it, or make your own?

Whether this is something you could build for yourself with an AI app builder, and what you would give up.

Keep it

Nothing WebSequenceDiagrams does is plain enough to make in a weekend. The 3 things listed below take a company.

It costs $120 a year.

What you could not

  • A diagram editor.
  • It plugs into other products, VS Code, Claude and GitHub Copilot among them, and has an API.
  • AI features, unless you pay a model provider for each request yourself.

What this rests on. WebSequenceDiagrams’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.

Part 05 · Alternatives

The alternatives

The tools it is most often weighed against, side by side

SequenceDiagram.org, Swimlanes.io, PlantUML, Mermaid and nomnoml

The 5 tools WebSequenceDiagrams is most often weighed against, with where each one differs from it.

Part 06 · Questions

Quick answers

The questions people ask about it, each answered in a line or two

15

Questions, each answered in a line or two

The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.

Is WebSequenceDiagrams free?

WebSequenceDiagrams has a free plan. WSD Basic: save your work, wider diagrams, revision history and PDF and SVG export.

How much does WebSequenceDiagrams cost?

WebSequenceDiagrams lists 4 plans. WSD Basic: $0.

What platforms does WebSequenceDiagrams work on?

WebSequenceDiagrams is available on Web.

Does WebSequenceDiagrams offer any discounts?

WebSequenceDiagrams publicly lists the following: Save 33% with annual billing.

Does WebSequenceDiagrams have an Android app?

No Android app was listed when its pages were read on Nov 13, 2026. WebSequenceDiagrams is listed for Web.

Does WebSequenceDiagrams have an iPhone app?

No iPhone app was listed when its pages were read on Nov 13, 2026. WebSequenceDiagrams is listed for Web.

Is WebSequenceDiagrams open source?

WebSequenceDiagrams is not described as open source on its own site, as read on Nov 13, 2026.

Can WebSequenceDiagrams be self-hosted?

Yes. WebSequenceDiagrams's own site says it can be run on a server of your own.

Does WebSequenceDiagrams have an API?

Yes. WebSequenceDiagrams offers a public API, according to its own site.

What does WebSequenceDiagrams integrate with?

WebSequenceDiagrams's listing names VS Code, Claude and GitHub Copilot.

Who makes WebSequenceDiagrams?

WebSequenceDiagrams is made by Hanov Solutions Inc.

What are the alternatives to WebSequenceDiagrams?

The closest alternatives to WebSequenceDiagrams in our directory are SequenceDiagram.org, Swimlanes.io, PlantUML, Mermaid and nomnoml.

How does WebSequenceDiagrams compare with other whiteboard and mind map tools?

WebSequenceDiagrams's GPA of 2.4 is higher than 43 of the 98 other whiteboard and mind map tools we grade, and level with 14.

Is WebSequenceDiagrams good value for money?

ToolGPA grades WebSequenceDiagrams C for value for money. Its paid plans start at $10 a month, against a middle price of $8 for the category: 49 of the 69 others that charge start lower.

Could I make my own version of WebSequenceDiagrams?

Nothing WebSequenceDiagrams does is plain enough to make in a weekend.

Where this guide comes from

The prices, plans, platforms and features were read from WebSequenceDiagrams’s own pages on Nov 13, 2026, and the grades were given on Nov 13, 2026. Graded from this listing, whose facts were read from WebSequenceDiagrams's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews.

Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Hanov Solutions Inc. Prices change, so check websequencediagrams.com before you buy.

Part 07 · About

About ToolGPA

Who made this guide, what else is on the site, and how to cite it

7,721

Tools graded, in 95 categories

ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.

Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.

  • 7,721

    tools graded

  • 95

    categories

  • 739

    price changes on record

  • 579

    apps priced in 12 countries

What else is on toolgpa.com

Scan for the live page

Prices and grades as they are today

Quoting this guide?

Please name ToolGPA and link to the live page, so readers can check the figures for themselves:

ToolGPA, "WebSequenceDiagrams: The Insider's Guide", checked Nov 13, 2026. https://toolgpa.com/tools/websequencediagrams

Know someone choosing between whiteboard and mind map tools?

Send them this guide: toolgpa.com/tools/websequencediagrams/guide

ToolGPA elsewhere: youtube.com/@toolgpa

See our other guides

The best-graded whiteboard and mind map tools after WebSequenceDiagrams, each with an Insider's Guide of its own.

ToolGPA

Choosing software? Every tool graded, every price dated.

Compare tools at toolgpa.com ›

Everything in this guide is ToolGPA’s own summary of what WebSequenceDiagrams’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. WebSequenceDiagrams is a trademark of its owner, and this guide is not made, paid for or approved by Hanov Solutions Inc. Prices and plans change: check websequencediagrams.com before you buy.