Stitch’s DESIGN.md format is now open-source so you can use it across platforms.

Google has open-sourced the draft specification for DESIGN.md, a documentation format used in its Stitch platform. The specification enables developers to implement the DESIGN.md format across different tools and platforms, rather than being locked into a single proprietary system. This move allows for broader adoption of the structured design documentation approach that Google has been using internally. The DESIGN.md format appears to be a standardized way to document design decisions and technical specifications within software projects. By releasing the specification as open source, Google is enabling the developer community to build tools and integrations that support this documentation format across various development environments and platforms. The open-source release represents Google's effort to establish DESIGN.md as a potential industry standard for technical design documentation, similar to how README.md files became ubiquitous for project documentation.