# AI tools for “second-brain”

388 matching tools; showing 24, ranked by relevance.

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Why it matched | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Second Brain Labs (Sbl.so)](https://openaitools.app/tool/second-brain-labs) | 33,086 | +2.7% | Free Trial, Paid | An autonomous AI SDR that finds buyers, runs the outreach and books the meeting | keywords 100%; semantic match | [.md](https://openaitools.app/tool/second-brain-labs.md) |
| 2 | [TwinMind](https://openaitools.app/tool/twinmind) | 207,739 | +4.8% | Freemium, Contact for Pricing | Never forget your ideas, conversations and meetings again | keywords 100%; semantic match | [.md](https://openaitools.app/tool/twinmind.md) |
| 3 | [Capacities](https://openaitools.app/tool/capacities) | 339,396 | +5.7% | Freemium, Paid | A studio for your mind: object-based notes that stay connected | keywords 100%; semantic match | [.md](https://openaitools.app/tool/capacities.md) |
| 4 | [Notion](https://openaitools.app/tool/t) | 173,441,670 | +0.1% | Freemium | The AI workspace where teams and agents get work done together | semantic match | [.md](https://openaitools.app/tool/t.md) |
| 5 | [remio](https://openaitools.app/tool/remio-ai) | 181,868 | +14.4% | Freemium | AI agent and second brain that turns your files, meetings and browsing into finished work | keywords 100%; semantic match | [.md](https://openaitools.app/tool/remio-ai.md) |
| 6 | [Fabric](https://openaitools.app/tool/fabric) | 168,987 | +2.7% | Freemium | Your files, notes and meetings in one drive — with an AI that knows all of it. | keywords 100%; semantic match | [.md](https://openaitools.app/tool/fabric.md) |
| 7 | [Muse](https://openaitools.app/tool/muse-ai-1) | 45,751,822 | +228.3% | Contact for Pricing | Your personal AI agent from Meta that actually gets things done | semantic match | [.md](https://openaitools.app/tool/muse-ai-1.md) |
| 8 | [Mem.ai](https://openaitools.app/tool/mem-ai) | 137,457 | -1.2% | Freemium, Paid | An AI notes app that organizes your knowledge for you | keywords 100%; semantic match | [.md](https://openaitools.app/tool/mem-ai.md) |
| 9 | [Synaptic AI](https://openaitools.app/tool/synaptic-ai) | 1,429 | -14.1% | Free | An AI second brain for everything you read and watch | keywords 100%; semantic match | [.md](https://openaitools.app/tool/synaptic-ai.md) |
| 10 | [Apex](https://openaitools.app/tool/apex-1) | 26,924 | -30.1% | Contact for Pricing | A hosted second brain that gives every AI you use your business memory | keywords 100%; semantic match | [.md](https://openaitools.app/tool/apex-1.md) |
| 11 | [Elephas](https://openaitools.app/tool/elephas) | 76,647 | -14.7% | Freemium | Private AI that answers from your own documents, on Mac and Windows | keywords 100%; semantic match | [.md](https://openaitools.app/tool/elephas.md) |
| 12 | [Reflect](https://openaitools.app/tool/reflect-ai) | 44,609 | -31.4% | Freemium | Open-source note-taking with backlinks, local Markdown and optional AI | keywords 100%; semantic match | [.md](https://openaitools.app/tool/reflect-ai.md) |
| 13 | [Podwise AI](https://openaitools.app/tool/podwise-ai) | 73,349 | -8.6% | Freemium | Turn every podcast episode into summaries, transcripts and mind maps | keywords 100%; semantic match | [.md](https://openaitools.app/tool/podwise-ai.md) |
| 14 | [Hyper: Self-driving Company Brain](https://openaitools.app/tool/hyper-self-driving-company-brain) | 9,642 | -1.5% | Freemium | An AI agent that connects your work tools and gets things done | keywords 66%; semantic match | [.md](https://openaitools.app/tool/hyper-self-driving-company-brain.md) |
| 15 | [Notion AI](https://openaitools.app/tool/notion-ai) | 13,460,455 | +13.4% | Freemium, Paid, Contact for Pricing | Your always-on AI teammate inside the Notion workspace | semantic match | [.md](https://openaitools.app/tool/notion-ai.md) |
| 16 | [mindlib](https://openaitools.app/tool/mindlib) | 1,958 | +0.3% | Freemium | A graph-based second brain with mind maps, AI chat and cross-device sync | keywords 100%; semantic match | [.md](https://openaitools.app/tool/mindlib.md) |
| 17 | [Sider](https://openaitools.app/tool/sider) | 2,644,740 | -10.6% | Freemium | AI sidebar and browser agent for reading, writing and research | semantic match | [.md](https://openaitools.app/tool/sider.md) |
| 18 | [Brain.fm](https://openaitools.app/tool/brain-fm) | 2,188,538 | -10.4% | Free Trial, Paid | Neuroscience-backed functional music for focus, sleep, and relaxation | keywords 66% | [.md](https://openaitools.app/tool/brain-fm.md) |
| 19 | [ScriptMind](https://openaitools.app/tool/scriptmind) | 219 | -68% | Freemium | AI note-taking that turns your writing into a connected second brain | keywords 100%; semantic match | [.md](https://openaitools.app/tool/scriptmind.md) |
| 20 | [HQ](https://openaitools.app/tool/hq) | 12,775 | -1.1% | Freemium, Contact for Pricing | One shared brain for your whole team's AI — skills, knowledge, and workflows that compound. | keywords 66%; semantic match | [.md](https://openaitools.app/tool/hq.md) |
| 21 | [Inner AI](https://openaitools.app/tool/innerai-com) | 1,231,706 | +12.6% | Free Trial, Paid | One Brazilian workspace blending 50+ AI models, an agent mode, and a WhatsApp assistant. | semantic match | [.md](https://openaitools.app/tool/innerai-com.md) |
| 22 | [YouMind](https://openaitools.app/tool/youmind) | 1,377,586 | +3.7% | Freemium | Learn deeper and create bolder with one AI studio | semantic match | [.md](https://openaitools.app/tool/youmind.md) |
| 23 | [Dex by Thirdlayer](https://openaitools.app/tool/dex-by-thirdlayer) | 9,262 | +9.5% | Freemium | The self-driving workspace that remembers everything about your operations | keywords 100%; semantic match | [.md](https://openaitools.app/tool/dex-by-thirdlayer.md) |
| 24 | [mymind](https://openaitools.app/tool/mymind) | 221,816 | -1% | Free Trial, Paid | A private, visual AI space to save and remember anything — no folders, no tagging | semantic match | [.md](https://openaitools.app/tool/mymind.md) |

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Source: https://openaitools.app/?q=second-brain

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