I&#x27;ve experimented with a number of them over the years. I even put some effort into my own.<p>Of the off-the-shelf ones, I like the YAML-based ones the best for the artifacts they store in the repository. ditz [1] is the grand-daddy in that space.<p>However, given that the majority of an issue is formatted text, I think the best ones are actually based on a markup language of some sort with an easy to parse frontmatter. The one I built way back when was based on ReStructuredText and used it&#x27;s nice, easy to RegEx, definition list format as frontmatter. These days I&#x27;d probably take the semi-standard &quot;Jekyll&quot; frontmatter approach of YAML+Markdown, and I&#x27;m somewhat surprised there still hasn&#x27;t been a big tool yet (that I&#x27;ve seen) take that approach. (That said, you can admirably fake it with a custom Jekyll collection as-is, so maybe it&#x27;s something we could build as an interesting template and&#x2F;or plugin...)<p>[1] <a href="http:&#x2F;&#x2F;ditz.rubyforge.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;ditz.rubyforge.org&#x2F;</a>