Guidelines, scripts for authoring structured, machine readable lists in plain Markdown by leveraging HTML.

Text-native animated character art format — the plain-text GIF

A human-readable, YAML-based open format for scheduling and time management.

One format to rule them all: Define and replay HTTP interactions using flexible, extensible XML.

Unified-diff patch concept for ApplyPatch-style single-file edits.

Portable Countdowns Spec

An open format specification and toolset for keyboard-centric performance charts — extending ChordPro with transposable riff notation, scale/mode metadata, and support for NNS, Solfege, and Sargam.

MDX (Markdown eXtended Container) - An open document format that packages Markdown content with embedded media into self-contained ZIP archives