Cross-platform CLI tool to validate configuration files (JSON, YAML, TOML, XML, INI, HCL, ENV, Properties, CSV, and more). Catch errors in syntax and schema before deployment. Written in Go.

SplunkLint is a comprehensive, browser-based tool for validating and analyzing Splunk Dashboard XML. It provides real-time feedback, actionable recommendations, and deep SPL query analysis - all without sending your data anywhere.

Validate SEPA XML files (pain.001, pain.008) against ISO 20022 standard. Python, zero dependencies.

lightweight XML Schema validation utility

XML to Array is a PHP library to convert XML content into PHP arrays and supports XML validation using XSD schemas.

Python-based XAdES-EPES signature validator for XML documents, commonly used in electronic invoicing and digital signing workflows. This tool verifies the integrity, authenticity, and certificate information of signed XML documents, helping ensure compliance with digital signature standards.