Local-first AI PKM for coding conversations: import Claude Code/Cursor/Codex, distill notes, semantic search, tag graph, MCP memory.

The best-benchmarked open-source AI memory system. And it's free.

ByteRover CLI (brv) - The portable memory layer for autonomous coding agents (formerly Cipher)

Cognitive memory database for AI agents — consolidates duplicates, detects contradictions, fades stale memories via temporal decay. Rust, Apache-2.0, ships as library / MCP server / HTTP cluster.