These are file formats that Cat's Eye Technologies has defined, and implemented processing tools for. "File formats" are generally simpler than languages.


Falderal is a file format for literate test suites. It is particularly suited for documenting programming languages (or other specifications of ways to transform text) and testing their implementation(s) in a language-agnostic fashion. The dumbed-down sound-bite version: "doctests for DSLs". It can be embedded in both Markdown and Literate Haskell.

Reference Implementation: py-falderal

Implementation: Test.Falderal


Feedmark is a file format for embedding curational information in Markdown.

Reference Implementation: feedmark (Python)