XML Schema Editor — Modern Visual XSD Workbench & CodeGen

Powerful Capabilities

Engineered for Enterprise Schema Architecture

A comprehensive suite of visual modeling, diagnostic validation, and automated code generation tools built with native Windows App SDK technology.

📐

Non-Overlapping Layout Engine

A 2-pass recursive subtree bounding layout algorithm guarantees zero card overlaps, mathematically centering parent nodes with children across complex deep hierarchies.

Recursive Bounding Auto-Centering 8K DPI Scaling

📄

Realistic XML Mock Generator

Generate realistic, compliant XML payloads from any schema. Supports minimal skeletons, full exemplars, boundary edge cases, and custom random data seeds.

Regex Patterns Facets & Bounds Realistic Seeds

🔷

Multi-Target Code Generation

Compile XSD types directly into strongly-typed C# POCO classes with XML serialization attributes, TypeScript interface definitions (.d.ts), and HTML docs.

C# POCOs TypeScript .d.ts HTML Interactive Docs

⚡

XPath 2.0 & Assertion Runner

Interactive test runner for evaluating XPath 2.0 selectors, assertions (<xs:assert>), and identity constraints in real time against mock instances.

XPath 2.0 XSD 1.1 Assertions Live Execution

🌐

Multi-File Modularity & Graphs

Visualize cross-file external namespace dependencies, <xs:import>, <xs:include>, and <xs:redefine> topologies with topological sorting.

Namespace Topology Multi-File Graph Circular Ref Detection

🛡️

Diagnostic Console & Crash Immunity

Real-time structured async logging with in-memory ring buffers, instant emergency crash dumps, memory telemetry, and strict zero-empty-catch block resilience.

Dockable Console Crash Dumps Profiling Metrics

Real Application Screenshots

See the Application in Action

Click the tabs below to explore different high-fidelity views and features of XML Schema Editor.

Ultra-fast GPU-accelerated hierarchical canvas with non-overlapping recursive layout, dual pane XSD code editor, and inline node editing.

Hierarchical Canvas with XSD Code Split View

W3C XML Instance and Batch Dataset Generator

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Interactive Preview

Explore the Core Workflows

Switch between the workbench modes to see how XML Schema Editor streamlines schema authoring, transformation, and testing.

High-Performance Diagramming Engine

DirectComposition hardware-accelerated canvas renders thousands of complex types and compositor trees at native 60–120+ FPS with fluid panning, snug auto-sizing, and zero dead space.

✓ Subtree auto-centering with collision-free coordinate routing
✓ Interactive drag-and-drop manual positioning with instant reset
✓ Native WinUI 3 effective pixels (ePX) dynamically scaling up to 8K

// Recursive Non-Overlapping Layout Engine
public double MeasureElementSubtree(XsdElementNode element)
{
    double childrenHeight = 0;
    foreach (var child in element.Children)
        childrenHeight += MeasureElementSubtree(child) + RowGap;

    return Math.Max(CardHeight, childrenHeight);
}

Realistic Mock XML Instance Generator

Synthesize complex test data conforming to facet bounds (minInclusive, maxExclusive, totalDigits, pattern regex) and enumeration lists in single clicks.

✓ Minimal Skeleton, Full Exemplar, and Edge Case generation modes
✓ Regex-aware random synthetic data generation
✓ Configurable repetition limits for unbounded sequences

<PurchaseOrder xmlns="http://example.com/po">
  <OrderHeader>
    <OrderNumber>ORD-9841-X</OrderNumber>
    <OrderDate>2026-08-20T10:00:00Z</OrderDate>
  </OrderHeader>
  <CustomerInfo>
    <CustomerId>CUST-44120</CustomerId>
    <EmailAddress>[email protected]</EmailAddress>
  </CustomerInfo>
</PurchaseOrder>

C#, TypeScript & HTML Documentation

Generate production-ready POCOs with [XmlElement], [XmlAttribute], and [XmlArray] annotations, or TypeScript interfaces for full-stack integration.

✓ C# 12 / .NET 10 records and partial classes
✓ TypeScript 5.0 strict ambient declaration interfaces (.d.ts)
✓ Searchable, standalone interactive HTML documentation

[XmlRoot(ElementName = "PurchaseOrder", Namespace = "http://example.com/po")]
public partial class PurchaseOrder
{
    [XmlElement(ElementName = "OrderHeader")]
    public OrderHeader OrderHeader { get; set; } = new();

    [XmlElement(ElementName = "CustomerInfo")]
    public CustomerInfo CustomerInfo { get; set; } = new();
}

Interactive XPath 2.0 & Assertion Runner

Test complex XPath queries and W3C XSD 1.1 <xs:assert test="..."> rules against generated XML instances with instantaneous live results.

✓ Real-time expression evaluation with node set highlights
✓ Assertion pass/fail status flags with error diagnostics
✓ Namespace prefix resolution matching schema context

// XPath 2.0 Query:
/PurchaseOrder/LineItems/LineItem[@Quantity > 5]/Price

// Evaluation Result: [3 Nodes Matched]
• <Price currency="USD">499.99</Price>
• <Price currency="USD">129.50</Price>
• <Price currency="USD">899.00</Price>

Preloaded Standards

Built-In Enterprise Schema Samples

Test, model, and benchmark your schemas against the world's most demanding open W3C industry definitions included out-of-the-box.

Aviation • AIXM

✈️ AIXM 5.1.1 Airspace

Deeply nested aeronautical data models and airport topology schemas for international air traffic management.

Publishing • NISO

📚 NISO STS Standards

Complex scientific tag sets supporting extensive technical metadata, MathML equations, and full text publishing.

Broadcasting • PBCore

📺 PBCore 2.1 Media

Public broadcasting metadata standards for digital video, audio tracks, and analog audiovisual assets.

Manufacturing • ISA-95

🏭 B2MML Operations

Enterprise manufacturing automation and ISA-95 supply chain production schedules.

Finance • ISO

🏦 ISO 20022 Banking

Global financial credit transfer, payment clearing, and international settlement messaging standards.

Statistics • SDMX

📊 SDMX 2.1 Dimensions

Statistical data and metadata exchange schemas for national banks, IMF, and OECD repositories.

Supply Chain • EDI

📦 ASC X12 EDI 850

Standard electronic data interchange specifications for global commercial procurement orders.

Automotive • Telemetry

⚡ EV Vehicle Telemetry

High-frequency connected powertrain battery metrics, CAN bus diagnostics, and GPS state vectors.

Performance Benchmark

How It Compares to Legacy Tools

Modern, lightweight, sub-second native Windows engineering designed to replace slow, bloated legacy IDEs.

Capability / Feature	XML Schema Editor	Legacy Studio IDEs	Heavy Java Suites
Startup Time	< 0.6s (Instant Splash)	8.0s – 20.0s	12.0s – 35.0s
Diagram Rendering Engine	DirectComposition GPU (120 FPS)	Software GDI / WPF (15-20 FPS)	Swing / JavaFX (Laggy)
Layout Collision Engine	Non-Overlapping Recursive Bounding	Manual / Overlapping	Rigid Grid Layout
Realistic Mock XML Generator	Included (Regex, Skeletons, Exemplars)	Basic / Empty Elements	Requires Paid Add-on
XPath 2.0 & XSD 1.1 Assertions	Built-In Interactive Runner	XPath 1.0 Only	Complex External Config
Multi-Target CodeGen (C#, TS, HTML)	One-Click Multi-Language	External xsd.exe CLI	Manual Exporters
Zero Telemetry / 100% Offline	Guaranteed Private & Offline	Online Telemetry Sinks	License Server Check-in

Pricing & Licensing

Transparent & Perpetual Licensing

Start with a full-featured 7-day trial. Own the workbench forever with a one-time purchase, zero subscriptions, and perpetual updates.

🎁 7-Day Fully Functional Free Trial

Experience 100% of all features with zero restrictions — hierarchical diagrams, vector export, code generation, mock synthesis, and cloud sync. No credit card required.

Download Free Trial →

⭐ Microsoft Store Edition

Store Lifetime

Individual developers & architects purchasing via Microsoft Store.

$ 75 / lifetime

✓ 1 Seat Perpetual License
✓ All Future Feature Updates Included
✓ High-Res SVG, PNG & PDF Export
✓ Live C# 12 & TypeScript CodeGen
✓ Multi-Cloud Sync (OneDrive, GDrive, Dropbox)
✓ Seamless Microsoft Store Updates

Get on Microsoft Store

Professional

Independent engineers requiring offline cryptographic key (.glic).

$ 75 / seat

✓ 1 Seat Offline License (.glic)
✓ 100% Air-Gapped & Offline Ready
✓ Unlimited Commercial Usage
✓ Full W3C XSD 1.0 & 1.1 Support
✓ Mock Instance Synthesis Engine
✓ Direct Sideload Deployment

Request Offline Key

Academic & Student

Accredited universities, researchers, and computer science classrooms.

$ 35 / seat (min 25)

✓ Classroom & Lab Volume Key
✓ Over 50% Educational Discount
✓ Interactive Schema Teaching Toolkit
✓ XPath 2.0 & Multi-Tab Workspaces
✓ Bulk Offline License Provisioning

Contact Academic Sales

Corporate Bulk

Enterprise development teams, financial institutions, and agencies.

$ 500 / 15 seats

✓ 15 Multi-Seat Enterprise Licenses
✓ Effective $33.33 / seat pricing
✓ Centralized .glic Floating Keys
✓ Classified / Offline Intranet Ready
✓ Corporate Invoice & PO Billing
✓ Priority Schema Support

Inquire Corporate Bulk

Frequently Asked Questions

Everything You Need to Know

Find quick answers to common questions about features, compatibility, performance, and licensing.

Upon first launching XML Schema Editor, a 7-day full-featured free trial begins automatically. You have unrestricted access to all diagramming, code generation, mock instance generation, and export capabilities. No credit card or account creation is required. When the trial ends, you can unlock lifetime access via the Microsoft Store or with an offline license key.

No! XML Schema Editor operates under a perpetual ownership model. Your one-time purchase of $75 grants you a permanent lifetime license including all future updates.

XML Schema Editor fully supports both W3C XML Schema 1.0 (Second Edition) and W3C XML Schema 1.1 specifications, including <xs:assert>, <xs:assertion>, type alternative dispatch, open content, and advanced restriction facets.

Yes! XML Schema Editor has zero remote telemetry dependencies and performs 100% of schema parsing, validation, mock instance generation, and code compilation locally on your machine. Your schemas and intellectual property never leave your workstation.

The diagram canvas utilizes a 2-pass recursive subtree height measurement algorithm. In pass 1, the total vertical bounding box of every child branch is calculated. In pass 2, parent cards are centered vertically relative to their subtrees, while sibling branches advance by their exact total height plus row spacing, eliminating overlapping cards across all depths.

Absolutely. The Export & CodeGen engine generates C# 12 / .NET 10 classes annotated with XML serialization attributes, TypeScript 5.0 ambient interface declarations (.d.ts), and standalone interactive HTML schema documentation with live search.

XML Schema Editor is a native 64-bit Windows App SDK / WinUI 3 application supporting Windows 11 (all versions) and Windows 10 (Version 1809 and higher), with native support for x64 and ARM64 architectures.

Visual XML Schema Modeling, Diagnostics & CodeGen Workbench