I made a simple tool regex2json in Go to convert traditional text-based (and line-based) logs to JSON for programs which do not support JSON logs themselves. But the tool is more general and can enable any workflow where you prefer operating on JSON instead of text. It works especially great when combined with jq. I was inspired by this blog post.

XML to JavaScript parser which uses XML Schema to guide conversion. Main motivation is that instead of guessing the structure of an XML document from the document itself, structure is created automatically from the XML Schema which makes output consistent for all XML documents, not just one at hand. For example, arrays are always arrays even when there is only one element in the particular XML document, and if there is only one element allowed, then there will be no one-element array wrapped around. This makes programmatically traversing the structure much easier, because structure is consistent and predictable.