DEV

 DEV  or  dev.to  is a silo-based community of software developers that uses their platform for discovery, publishing articles and networked learning about programming and development topics.

"DEV is built on Forem: open source software designed to empower communities. Because our application is open source, you can inspect every little detail of the code, or chip in yourself! Forem is available for anyone interested in creating similar communities in any niche or passion. Visit our meta Forem, forem.dev for more information.—DEV about page"

Syndication
Their blog platform uses Markdown and Liquid tags for composing posts so one can easily cut-and-paste content from their site for cross posting. The bottom of the post editor has a hexagonal icon with a circle inside that provides posting options including the ability to provide a rel-canonical link to indicate a syndication source.



They provide a facility for cross-posting drafts of articles using RSS and rel-canonical links with details which can be found here: https://dev.to/settings/extensions

POSSE Examples

 * 2021-12-21 manually syndicated a copy of his article at https://boffosocko.com/2021/12/20/55799844/ to https://dev.to/chrisaldrich/handwriting-my-website-with-a-digital-amanuensis-kje

Webmention support
The platform has shown some interest in providing support for Webmention:
 * See: Github Discussion and subsequent Forem Feature Request