Quivr

Quivr has been rebuilt from the ground up. The old second-brain chat app is gone; the repository, now under The Vibe Company, holds Quivr V2, a Go service for ongoing monitoring: it pulls in news feeds, mailboxes or social posts as they appear, indexes each item almost at once, and alerts you when new material fits a topic you follow. One binary runs the API, worker and migrations, backed by PostgreSQL, S3-compatible object storage, Temporal for durable workflows, Weaviate for lexical, vector and hybrid queries, and a local server running a small multilingual E5 embedding model. Writes are idempotent and versioned, so corrections keep history. Saved queries become subscriptions that fire signed webhooks on keyword rules, local embedding similarity, or an optional third-party classifier that receives article text. Connectors cover RSS, Microsoft 365 mail, X lists and archive imports, and plugins add formats and business rules. A local stack needs Docker Compose, Go, Python and Node on Linux x86_64 or Apple Silicon. The API is still v0 and releases are alphas the team says are not production ready. Licensed MIT.