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xmlvalid VS Altova XMLSpy

Compare xmlvalid VS Altova XMLSpy and see what are their differences

xmlvalid

Validate XML and e-invoices up to 1 GB in your browser: XSD, DTD, RelaxNG and official business rules

Rating
0 reviews
Pricing
Freemium $29 / Monthly (Pro)
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Alternatives Is it good?
Altova XMLSpy

The XMLSpy XML Editor is a powerful tool for editing XML and related technologies. It is the only XML Editor with patented SmartFix validation, enterprise-grade editors, converters, debuggers, and code generators.

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0 reviews
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Deciphrfi
The intelligent crypto financial operation system. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Data Validation popularity
100% vs 0%
alternatives listed
9 vs 70

Base details

Website, pricing, platforms and company facts side by side.

xmlvalid
Altova XMLSpy
Website xmlvalid.com altova.com
Pricing
Freemium $29 / Monthly (Pro) Official pricing
—
Platforms
Web REST API gRPC APISOAP API
—
Company Startup from Ukraine · 1 - 9 employees · 2026 —
Listed in
Developer Tools APIs CI/CD XML Data Validation Finance +3
Development Text Editors Task Management IDE +1

About xmlvalid and Altova XMLSpy

In their own words, as submitted to SaaSHub.

xmlvalid
Altova XMLSpy

xmlvalid is an online XML validator built for production-size documents and e-invoicing. Validation XSD 1.0, DTD, RelaxNG (XML and compact syntax) 7,700+ Schematron business rules: EN 16931 (UBL and CII), Peppol BIS and PINT, XRechnung, ZUGFeRD / Factur-X, and national rules from France, Italy,...

Read more about xmlvalid

No description of Altova XMLSpy yet.

Features and specs

What each product offers, as listed by its team.

xmlvalid 19 features
Altova XMLSpy 5 features
  • Schema languages
    XSD 1.0, DTD, RelaxNG (XML and compact)
  • Business rules
    7,700+ Schematron rules (EN 16931, Peppol BIS and PINT, XRechnung, Factur-X, national CIUS) plus your own .sch
  • Schema catalog
    177 official schemas with all their include files
  • Country guides
    E-invoicing in 24 countries, the profile picked from the invoice automatically
  • Max File Size
    50 MB without an account, 1 GB with a free account (5 GB tested)
  • Batch validation
    A folder or .zip of up to 1,000 documents
  • Privacy
    Validated in the browser, nothing uploaded
  • Input methods
    Upload, paste, URL, or a folder or .zip of up to 1,000 documents
  • PDF invoices
    Factur-X, ZUGFeRD and ISDOC, with PDF/A (veraPDF) and PDF text checks
  • Error details
    Line and column, explanations for libxml2, Java (Xerces) and .NET messages
  • E-invoice Detection
    Profile picked automatically from the document
  • API
    REST (OpenAPI 3.1), SOAP, MCP server, SDKs for PHP, Laravel, Symfony, Python and JavaScript
  • CLI
    CLI (npm @xmlvalid/cli), GitHub Action, GitLab CI, pre-commit
  • URL monitors
    Alerts by email or webhook when a feed starts failing
  • Reports
    PDF, HTML, JSON export, share links
  • Dark Mode
  • Integrations
    n8n, Apify, Postman
  • Monitoring
    URL monitors with email and webhook alerts
  • Free Tools
    XML formatter, XPath tester, XSLT transformer, XML diff, XML to JSON / CSV, XSD generator, XSD to XML, e-invoice viewer
  • Comprehensive XML Support
    Altova XMLSpy provides extensive support for XML-related technologies, including XSD, XSLT, XPath, XQuery, and more, facilitating a wide range of XML development tasks.
  • Graphical XML Schema Editor
    The tool offers a visual representation for editing XML Schemas, making it easier to understand complex data structures and relationships without diving into raw XML code.
  • Intelligent Code Completion
    XMLSpy offers intelligent code completion and syntax checking, which can significantly speed up development and reduce errors in XML, JSON, and other code.
  • Support for Database Integration
    It allows seamless integration with databases, enabling users to import, export, and query data directly using XML and JSON tools within the software.
  • Robust Debugging and Reporting
    With powerful debugging capabilities and detailed error reporting, XMLSpy assists developers in troubleshooting and ensuring the accuracy and reliability of their XML applications.

Possible disadvantages

  • Cost
    XMLSpy is a premium software with a corresponding price tag, which may be prohibitive for individual developers or small businesses with limited budgets.
  • Steep Learning Curve
    Due to its comprehensive set of features, new users may find XMLSpy challenging to learn and master compared to simpler, more focused XML tools.
  • Resource Intensive
    The software can be demanding in terms of system resources, potentially affecting performance, especially on lower-end hardware or with large files.
  • Complex User Interface
    While feature-rich, the user interface can be overwhelming for beginners, with numerous options and settings that might not be intuitive at first glance.
  • Platform Limitation
    XMLSpy is primarily available for Windows, which limits its accessibility for developers working on other operating systems such as macOS or Linux without using a virtual machine or similar solutions.

Analysis

An editorial look at what each product does well and who it suits.

xmlvalid
Altova XMLSpy

No analysis of xmlvalid yet.

Overall verdict

  • Yes, Altova XMLSpy is generally regarded as a good choice for both novice and advanced users who need a robust XML and JSON editor. Its extensive feature set, combined with a user-friendly interface and reliable performance, makes it a popular choice among developers and IT professionals.

Why this product is good

  • Altova XMLSpy is considered a good XML editor because it offers a wide range of powerful tools for editing, validating, and debugging XML. It provides features such as a graphical XML Schema editor, support for XSLT and XQuery, integration with relational databases, and comprehensive XML validation capabilities. The professional edition also includes JSON and SOAP debugging functionality, making it versatile for different types of XML-related tasks.

Recommended for

  • XML and JSON developers
  • Data architects
  • Integrators dealing with data interchange formats
  • IT professionals working with SOAP and web services
  • Software engineers needing XML Schema and WSDL tools

Videos

Walkthroughs and reviews on video.

xmlvalid 0 videos + Add
Altova XMLSpy 1 video + Add

No xmlvalid videos yet. You could help us improve this page by suggesting one.

Altova XMLSpy - Edit, Debug and Execute XQuery

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
xmlvalid
Altova XMLSpy
100% 100%
Data Validation
0% 0%
0% 0%
Text Editors
100% 100%
100% 100%
Finance
0% 0%
0% 0%
Task Management
100% 100%

Questions & Answers

As answered by people managing xmlvalid and Altova XMLSpy.

Which are the primary technologies used for building your product?

xmlvalid's answer

  • Rust and libxml2 (validation engine), compiled to WebAssembly
  • SaxonJS (Schematron business rules)
  • veraPDF (PDF/A checks)
  • Laravel and Livewire (PHP)
  • Tailwind CSS
  • PostgreSQL, Redis, Meilisearch
  • Cloudflare

What makes your product unique?

xmlvalid's answer

  • Schema validation and e-invoicing business rules in one place: XSD, DTD and RelaxNG, plus 7,700+ Schematron rules of EN 16931, Peppol BIS and PINT, XRechnung, Factur-X and national formats from France and Italy to Saudi Arabia, Mexico and Brazil
  • Built for large files: a streaming Rust engine (libxml2 compiled to WebAssembly) validates documents up to 1 GB in the browser with flat memory (5 GB tested)
  • 177 official schemas ready to use, and e-invoice profiles detected automatically from the document
  • E-invoice PDFs (Factur-X, ZUGFeRD, ISDOC) checked whole: the XML inside, PDF/A, and the PDF's text against the XML
  • Every error links to a page explaining why it fails and how to fix it, for libxml2, Java and .NET messages
  • The same checks in CI and integrations: REST API, SOAP, MCP server for AI agents, CLI, GitHub Action, n8n

Why should a person choose your product over its competitors?

xmlvalid's answer

  • Desktop editors (XMLSpy, Oxygen) are powerful but expensive and need installing; xmlvalid works in the browser for free
  • Simple online validators check one schema and stop at a few MB; xmlvalid streams up to 1 GB and ships schemas with all their imports
  • E-invoice validators (KoSIT, Peppol testbeds) check one format each and have no CI tooling; xmlvalid covers many formats and countries, reads PDF invoices, and has an API, CLI and GitHub Action
  • Documents are validated in the browser and not uploaded

How would you describe the primary audience of your product?

xmlvalid's answer

  • Developers and integrators building or receiving e-invoices (Peppol, XRechnung, Factur-X, FatturaPA, KSeF, ZATCA, CFDI, NF-e, UBL, CII)
  • ERP and accounting software vendors preparing for national e-invoicing mandates
  • Teams that exchange XML with partners: payments (ISO 20022), healthcare (HL7 CDA, FHIR), feeds and sitemaps
  • DevOps engineers who want XML checks in CI pipelines
  • Anyone who needs to validate a large XML file quickly without installing software

What's the story behind your product?

xmlvalid's answer

xmlvalid is built and run by Oleksii Babintsev, a developer from Ukraine, so questions and bug reports reach the person who builds the engine. It started as a streaming validator for XML files too large for typical online tools, and grew into e-invoicing as countries made structured invoices mandatory: business rules for EN 16931, Peppol, XRechnung and national formats in 24 countries, PDF invoices, an API, CLI and GitHub Action for CI, and monitors for XML feeds. While building it, we found and fixed a slowdown in libxml2's validation of large files and contributed the fix upstream. It launched in October 2026

User comments

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