Second Brain
traction report
Open Source
Overview
People don't just star it.
They deploy it.
Second Brain is a self-hosted memory layer that works across Claude, ChatGPT, Cursor, and any MCP client. Store something once, recall it everywhere. It runs entirely in the user's own Cloudflare account — free tier, no telemetry, no vendor in the middle.
MIT License
Cloudflare Workers
#3 Product Hunt
MCP Native
The Story
01
Every AI session starts from zero
Context lives in silos. What you tell Claude, ChatGPT never knows. Developers re-explain their projects to every tool, every session. Second Brain makes memory portable and user-owned.
02
Built in public, deployed in private
Launched May 31, 2026 — #3 Product of the Day on Product Hunt with no budget and no audience. In the last 14 days alone: 450+ unique cloners and a ~20% visitor-to-clone rate. Because it's self-hosted by design, there is no usage telemetry — adoption shows up as deployments, not dashboards.
03
Contributors arrive unsolicited
Security, data-integrity, and sync features have all been shipped by external contributors — people who found the project, deployed it, and improved it without being asked. Community pull requests have been merged across the core repo and its Obsidian plugin. For an open source project, that is the signal.
Weighted Engagement Score
Weighted Engagement Score
0
CURRENT
Forksdeploy signal
5×
Installsnpm + Obsidian + releases
3×
Starssocial proof
1×
90d target
6,825
Stars measure discovery. Forks and installs measure commitment. WES weights accordingly: forks 5×, installs 3×, stars 1×. Every input is a cumulative lifetime count — installs sum real usage across npm, the Obsidian community, and GitHub releases — so the score reflects total engagement and only ever grows.
Why the Numbers Matter
Core Metrics (14-day)
Ecosystem
Growth Forecast
Traffic Sources (14-day)
What People Read (14-day)