🎉🎂 Happy 3rd birthday #Webmention! https://indieweb.org/Webmention
@W3C Recommendation published 2017-01-12 with a still live robust test suite, Webmention has more interoperable implementations than any other federated peer-to-peer social web protocol, API, or standard, and continues growing with new implementations:

https://indieweb.org/Webmention#Publishing_Software

Want to implement Webmention your own site?

See: https://indieweb.org/Webmention-developer

Chat: https://chat.indieweb.org/dev