Voice-first second brain: record a voice note, get it transcribed, filed into projects, and searchable by meaning
Voice Memo is a voice-first second brain, open source (MIT) and self-hosted. Record a 15–30 second voice note on your phone or Mac and it gets transcribed, cleaned up, and split into ideas, tasks, decisions, open questions and reminders — filed into projects automatically and indexed for semantic search.
Its signature trick is that it keeps up when you change your mind: say "yellow, not orange" in a later memo and the old decision is marked replaced, the old task leaves your list, and every change shows up on Home with Undo. A built-in MCP connector (14 tools, OAuth-protected) lets Claude read your memos, add action points and set reminders directly.
The whole thing runs on free tiers — Cloudflare (Workers, D1, R2, Vectorize, KV, Workers AI) plus free AI APIs with Groq first — so self-hosting costs nothing per month. Web, Android and Mac apps included.
The vibe-coding story is unusually clean: the author's README opens with "vibe coded with Claude from the first line," and the git history's commits are co-authored by "claude". A serious multi-platform productivity system, pair-programmed with an AI from line one.