ActivityPub

W3C Recommendation (2018) for decentralised social networking, used by Mastodon and the wider Fediverse. Its messages are Activity Streams 2.0 in JSON-LD, so the Fediverse runs on Linked Data.

Read the specification ↗ activitypub.rocks On GitHub ↗

Part of threads Can readers write back? proposes; Can the Web forget? proposes; Central against decentralized proposes; One-way or two-way links proposes

builds on

• Activity Streams 2.0 standard 2017 [src]

published by

• World Wide Web Consortium organization 1994 [src]

alternative to

• AT Protocol standard 2022 [src]
  rival protocols for decentralised social media

authored by

• Amy Guy person [src]
• Erin Shepherd person [src]
• Evan Prodromou person b. 1968 [src]

edited by

• Christine Lemmer-Webber person b. 1984 [src]
• Jessica Tallon person [src]

critiqued by

• Bluesky and the AT Protocol: Usable Decentralized Social Media writing 2024 [src]

Sources

• https://www.w3.org/TR/2018/REC-activitypub-20180123/