Default plan
Starter
$197one-time
- Full system, self-configured
- Community access
- No support
Our own assessment, scored on published criteria. Separate from buyer reviews.
5.3 / 10
Skill packSkills you trigger one at a time.
Evidence: Markdown memory system with skills and commands you run in your assistant; memory carries across sessions, but no agents or scheduled runs are documented.
A tidy personal knowledge and memory system in plain markdown that works with most assistants, with a 7-day refund and an active partner programme. It is easy to own and easy to start, but it is mostly structure and commands rather than agents that do work on their own, so the higher tiers are paying for coaching more than capability. Good for knowledge workers who want their assistant to remember them.
Security: Not scanned. Not scanned: the files are sold, not public. Plain markdown files kept on your own machine; site has HTTPS, privacy policy and terms.
Rated on
Second Brain 2.0 keeps clients, projects, voice patterns and decisions on your own computer as plain files plus a local database, so AI tools you already use can read them. It writes insights back after sessions. Three one-time tiers add AI-assisted configuration, support and a founder onboarding call.
What it is. Second Brain 2.0 keeps clients, projects, voice patterns and decisions on your own computer as plain files plus a local database, so AI tools you already use can read them. It writes insights back after sessions. Three one-time tiers add AI-assisted configuration, support and a founder onboarding call.
Pricing. Starter $197, Accelerator $597, Launch Partner $2,497, all one-time; 7-day money-back guarantee Licence. Proprietary Where it runs. Claude Code, Claude, ChatGPT, Gemini
Facts checked on 2026-10-06 from the maker's own site: https://www.iwoszapar.com/second-brain-ai. Not stated by the maker on that date: docsUrl, repoUrl, selfUpdating, supported OS list (inferred as local files).
No agent breakdown has been provided.
Prices are the maker's, as published on their site on Oct 6, 2026. Buy on the maker's site.
Default plan
$197one-time
$597one-time
$2,497one-time
Buyer reviews open when the maker sells here.
Operating system
By All Sorted
The AI operating system installed for you.
Made by the team behind AIOS Market.
$3,499
Operating system
By Nate Herk
Free starter kit that turns Claude Code or Codex into a personal AI operating system
Listed by AIOS Market
Free
Operating system
By Viola Ekene, Viola Growth Labs
Done-for-you build that turns a founder's expertise into a custom AI operating system
Listed by AIOS Market
$2,500 once, or $400 a month
Agent
By Nous Research
Open-source self-improving agent with memory, scheduling and many messaging channels
Listed by AIOS Market
Free, or $200 a month
Operating system
By Daniel Miessler
Open-source personal AI harness that stores your goals and context for Claude Code
Listed by AIOS Market
Free
Operating system
By OpenClaw Foundation
Open-source personal AI assistant that runs on your own devices and chat apps
Listed by AIOS Market
Free