1
Notion
VerifiedMust try
added 2026
Freemium
Paid from $10 per month
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15 Second Brain tools, ranked by readers
Every listed tool supports Second Brain. The order comes from 2 reader votes. 10 have a free way in.
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4 data-backed ways into the list.
Top 5, side by side
The 5 most-voted tools on the facts readers ask about.
| Fact | #1 Notion | #2 Obsidian | #3 Google NotebookLM | #4 Microsoft OneNote | #5 Evernote |
|---|---|---|---|---|---|
| Reader votes | 1 | 1 | 0 | 0 | 0 |
| Rating | |||||
| Pricing model | Freemium | Freemium | Freemium | Freemium | Freemium |
| Starts at | $10 per month | $4/mo | $249/mo | Not listed | Custom pricing |
| Free way in | Yes | Yes | Yes | Yes | Yes |
| Saves | 26 | 0 | 3 | 0 | 1 |
| Added | 2026 | 2026 | 2026 | 2026 | 2026 |
What this costs
Here’s how all 15 tools break down by starting price.
Median entry price $9.49/moCheapest paid $4/moFree plan available 10 of 15
BoostedSponsored, does not affect rank
Your tool, in front of 15 competitors
Paid placements appear above the ranking, labelled honestly.
All 15 tools
Ranked by readers.
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ToolPricingVoteSave
Showing all 15 tools, ranked by 2 reader votes. Ties fall back to reviews and saves.
2
Obsidian
Cheapest
added 2026
Freemium
Paid from $4/mo
3
added 2026
Freemium
Paid from $249/mo
4
added 2026
Freemium
5
added 2026
Freemium
Custom pricing
6
added 2026
Freemium
Paid from $4/mo
7
added 2026
Freemium
Paid from $9.99 per month
8
added 2026
Paid
From $29/mo
9
added 2026
Paid
From $8.99/mo
10
added 2026
Freemium
11
added 2026
Paid
Custom pricing
12
added 2026
Paid
From $10/mo
13
added 2026
Freemium
Paid from $8/mo
14
added 2026
Paid
Custom pricing
15
added 2026
Freemium
Paid from $8/mo
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5 questions
Common questions
Answers derived from the tools on this page.
How many Second Brain tools are there?
Siteefy's live index currently tracks 15 Second Brain tools, with 15 added in 2026. The count updates automatically as tools are published or retired.
What is the best Second Brain tool right now?
Notion holds the top spot on this list, rated 4.5 stars by the community. The ranking comes from reader votes, so the leader changes as votes come in.
Are there free Second Brain tools?
Yes. 10 offer a free plan alongside paid tiers. Notion is the highest-ranked option with a free way in.
How much do Second Brain tools cost?
Paid plans start at $4/mo (Obsidian). Each row in the list above shows the tool's pricing model and starting price.
How is this Second Brain list ranked?
By reader votes: every vote moves a tool up or down, star ratings come from community reviews, and anyone can vote, review a tool, or suggest one that is missing.