Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.
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.
Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.
XML Copy Editor - XML Copy Editor is a fast, free, validating XML editor.
Burp Suite - Burp Suite is an integrated platform for performing security testing of web applications.
XMLable - XMLable is an online toolbox designed for working with XML, offering tools such as a formatter, validator, comparator, generator, XPath tester, XSD generator, and XSL transformation.