Second‑brain tools shifting
The second‑brain conversation is heating up: Tiago Forte briefly priced his Building a Second Brain ebook at $3.99 for a one‑day deal, Obsidian migrations and workshops are trending, and AFFiNE — a free, local‑first note app — is being touted as a serious open‑source alternative to Notion/Evernote. Users are showing heavy tool customization (one public setup claims 17K notes and CLI‑driven Obsidian agents), signalling deep interest in extensible, privacy‑first knowledge stacks. (x.com) (x.com) (xda-developers.com) (x.com)
Tiago Forte’s Building a Second Brain has reached more than 500,000 copies sold and is promoted as part of enterprise and institutional training programs cited on official book pages and the author’s site. (barnesandnoble.com) Forte’s site still offers a packaged “masterclass” and replay access alongside the book, with the official book listing showing typical e‑book pricing around $14.99 and bundled course options on the book’s companion pages. (buildingasecondbrain.com) Obsidian’s product updates introduced a migration assistant for Sync (announced in a public changelog), signaling an engineering push to make cross‑vault moves and encryption upgrades smoother for users. Obsidian’s official CLI and a surge of community plugins now let users script and automate vault operations from the terminal, and independent coverage traces the CLI from early access in February 2026 to general availability later that month. (obsidian.md) A growing ecosystem of “agent” plugins ties AI assistants directly into Obsidian — the RAIT‑09 Agent Client and related projects have active GitHub repos integrating Claude Code, Codex and Gemini CLI into vault workflows (the RAIT‑09 repo shows widespread forks and stars). (github.com) AFFiNE has stepped into the conversation as a free, open‑source, local‑first workspace with a public GitHub and press coverage highlighting its combined docs/whiteboard approach and privacy‑first defaults. (github.com) Community evidence shows vaults routinely scale into the tens of thousands of notes (Obsidian forum tests have documented vaults with hundreds of thousands of files), and ecosystem tooling—starter kits and vault statistics plugins—explicitly advertise support for 10,000+‑note setups for power users. (forum.obsidian.md)
