Subgrapher

The desktop application lets users create and navigate “semantic references,” which combine web pages, notes, folders, email threads, and generated visualizations into a single, searchable unit. Within each reference an AI agent can reason over the assembled context, and users may fork references, share them publicly, or restrict access to trusted peers.

It functions as a local‑first workspace that also serves as a mail client, personal organizer, and a platform for decentralized knowledge and message sharing. By keeping data on the user’s machine while supporting peer‑to‑peer exchange, the tool aims to avoid the lock‑in of closed services.

The software targets researchers, knowledge workers, and anyone who wants a flexible, offline‑first environment for aggregating and collaborating on information without relying on centralized platforms.