Smart Second Brain
PulseGate's liveness check found it on 19 Sep 2026; it is registered on GitHub and has been in the index since 19 Sep 2026. How this is checked
Smart Second Brain is an open-source Obsidian plugin that groups notes by topic, supports semantic search, and lets users chat with their vault. It can work without AI setup for search and graph features, while AI-assisted workflows can run with a user-selected model, including offline setups.
Inferred · not functionally tested
Overview
6 featuresPurpose: Finding, organizing, and using information stored across a large Obsidian note vault.
Inferred · not functionally tested
Audience: Obsidian users, students, and researchers managing personal knowledge vaults
Inferred · not functionally tested
Functions: rag, collaboration
Inferred · not functionally tested
Interfaces: API: unknown · MCP: unknown · CLI: unknown · Self-hosting: indicated (inferred, not tested)
Recorded constraints: pricing: open_source · license: MIT · platforms: WEB · deployment: browser, self_hosted, cloud_managed
Constraint provenance is unknown; confirm requirements with the publisher.
Record sources: smartsecondbrain.dev · github.com. These links do not verify the individual claims.
In the Knowledge base & wikis space, Smart Second Brain takes a focused approach. Inferred · not functionally tested: Finding, organizing, and using information stored across a large Obsidian note vault. Inferred · not functionally tested: It is built as an open-source project for obsidian users, students, and researchers managing personal knowledge vaults. Basis unknown · not verified: Smart Second Brain is open source under the MIT license. Basis unknown · not verified: It ships for the web, and it can be self-hosted.
Behind Smart Second Brain is s2b-dev, and it first shipped in 2023. Development happens publicly on GitHub with 1.3k stars and 398 commits in the last 90 days. Inferred · not functionally tested: Key capabilities include Semantic Search, Topic Grouping, and Vault Chat.
Summary written by a language model from the project’s public pages.
Tasks: Inferred · not functionally tested
- Semantic Search
- Topic Grouping
- Vault Chat
- AI Agent
- Note Graph
- Change Approval
Topics: Inferred · not functionally tested
Built with & integrations
- Claude Code
- commit b278a58d42a7 · since Sep 2026
- Astro
- /_astro/ in the HTML
- local_oss
- bollama in the HTML
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
- Indexed7 Sep · 17:05 UTCs2b-dev/smart-second-brain seen via GitHub Search (Smart)Source: GitHub Search (Smart) · Open
Frequently asked questions about Smart Second Brain
- What does Smart Second Brain do?
- Inferred · not functionally tested: Finding, organizing, and using information stored across a large Obsidian note vault. It is catalogued under Knowledge base & wikis on PulseGate.
- Who should use Smart Second Brain?
- Inferred · not functionally tested: Smart Second Brain is an open-source project built for obsidian users, students, and researchers managing personal knowledge vaults.
- Is Smart Second Brain free?
- Basis unknown · not verified: Yes — Smart Second Brain is open source under the MIT license and free to use.
- What platforms does Smart Second Brain run on?
- Basis unknown · not verified: Smart Second Brain runs on the web. It can also be self-hosted.
- Is Smart Second Brain still active?
- PulseGate's liveness check found it on 19 Sep 2026. Its GitHub repository shows 398 commits in the last 90 days.
- Who develops Smart Second Brain?
- Smart Second Brain is developed by s2b-dev.
- How long has Smart Second Brain been around?
- Smart Second Brain first shipped in 2023.
- Is Smart Second Brain open source?
- Basis unknown · not verified: Yes — Smart Second Brain is open source under the MIT license, developed on GitHub.
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