Underlay
Publish structured data as versioned, permanent collections with schemas, provenance, and content addressing built in. Whether you're a research lab, a newsroom, a community archive, or a single developer, Underlay makes the knowledge you hold discoverable, verifiable, and easy to build on.


Meitheal · SensorThings on ATProto
Meitheal: live environmental sensor data published to the AT Protocol.

Podium — open data search
Podium: a search engine for open data published on the AT Protocol — Matadisco datasets, Astrosky transient events, and more.
Hypercerts — Collective Intelligence for Funding Impact
Hypercerts create shared context—evidence, expert input, and community trust—for better resource allocation.

GainForest — Biodiversity Observations & Nature Projects
Explore field observations, biodiversity records, and nature projects from communities and organizations using GainForest.


RRGI · Discourse Graph — lens switch
RRGI publishes research as a graph of signed, IPFS-archived records. Questions, claims, evidence, and sources join into one graph anyone can read and extend.
Skysquare — Public conversation, anchored to the web
Skysquare is a Chrome extension that brings public Bluesky conversation back to the articles, passages, and source pages being discussed.

co/core — an AI cooperative
co/core is a cooperative for AI inference — people pooling the Macs they already own to run open models for each other, instead of renting from the big clouds. An experiment in AI infrastructure we build, share, and own together. Bring your existing OpenAI-compatible code, or share a Mac and help run it.

Sifa — Portable professional identity on the open web
Replace your LinkedIn URL with a portable profile that updates itself from your real activity across the open web. EU-hosted. Free. No lock-in.
Agentis — coming soon — BioKEA
An AI-first scientific journal built on the AT Protocol. Fast, verifiable peer review and publications as interactive StoryMaps.

GreenEarth Social | Jonathan Stray | Substack
Open-source AI-driven Social Media Feeds for Everyone. Click to read GreenEarth Social, by Jonathan Stray, a Substack publication. Launched 7 months ago.

science.latha.org
lexicons.bio
Observ.ing - Observe nature. Own your data.
A decentralized platform for biodiversity observations, built on the AT Protocol.
the-astrosky-ecosystem/nebra
Stream or send time-critical scientific data live and for free on the ATProtocol.