r/secondbrain is a subreddit with 5k members. The community frequently discusses second brain, organization, app, note, and notion.
The Official sub-reddit for Second Brain. A place to discuss tools and methods to create and deploy networks of AI-agents that handle the context in our lives.
Sub-reddit was created 10 years ago, but the initial mission was always to have a software that maps the way you think and work.
Popular Topics in r/secondbrain
#1
Second Brain
88 posts
#2
Organization
49 posts
#3
App
47 posts
#4
Note
40 posts
#5
Notion
38 posts
#6
Productivity
17 posts
#7
Brain
16 posts
#8
Ai
13 posts
#9
Notes
13 posts
#10
Second
12 posts
Member Growth in r/secondbrain
Yearly
+2k members(55.5%)
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About
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Last updated: July 9, 2026