Hyalo is a command-line interface (CLI) tool designed for users who need to explore and manage Markdown files enriched with YAML frontmatter. This utility is particularly useful for individuals working with extensive collections of Markdown documentation, such as those utilizing Obsidian vaults or Zettelkasten systems. Its features include property queries and tag filtering, enabling users to swiftly locate specific entries or categories within their Markdown files.

In addition to its search capabilities, Hyalo offers regex search functionality and supports wikilink tracking, enhancing the interconnectedness of notes. Users can also perform bulk metadata updates, streamlining the process of maintaining organized documentation. As a free tool available on Windows, Hyalo is an excellent choice for anyone looking to efficiently manage their Markdown knowledge bases.