OSS (AGPL): index a folder of Markdown notes into local SQLite, then expose search/recall/remember tools over MCP so Claude Code/Codex reuse decisions across sessions; hosted option at renor.cloud.
Earendil experimental package (~15k LOC): SQLite/JSONL checkpoints, multi-conversation forks, extension tools/hooks, and multiplayer steering so agents resume after process death—complement to Pi coding agent; still trending in Oct 16 agentic-coding writeups.