# AI tools for “second-brain”

70 matching tools; showing 24, ranked by relevance.

Filters: `group=coding-development`

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Why it matched | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [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) |
| 2 | [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) |
| 3 | [GitBook](https://openaitools.app/tool/the-new-gitbook) | 557,489 | -4.6% | Freemium | The documentation platform that keeps docs accurate for people and AI | semantic match | [.md](https://openaitools.app/tool/the-new-gitbook.md) |
| 4 | [Linnk.AI](https://openaitools.app/tool/linnk-ai) | 451,514 | +12.4% | Freemium | Translate, summarize, and understand documents in 154 languages without losing the layout | semantic match | [.md](https://openaitools.app/tool/linnk-ai.md) |
| 5 | [LlamaIndex](https://openaitools.app/tool/llamaindex) | 387,910 | +19.9% | Freemium, Contact for Pricing | Turn any document into AI-ready context with agentic parsing and extraction | semantic match | [.md](https://openaitools.app/tool/llamaindex.md) |
| 6 | [Ottermind](https://openaitools.app/tool/ottermind) | 140,597 | +42.9% | Freemium | An AI agent workspace that carries real work from idea to finished output | semantic match | [.md](https://openaitools.app/tool/ottermind.md) |
| 7 | [Fibery](https://openaitools.app/tool/fibery) | 247,622 | +15.9% | Freemium, Free Trial, Paid | A no-code work platform that replaces your scattered tools with one connected workspace | semantic match | [.md](https://openaitools.app/tool/fibery.md) |
| 8 | [supermemory](https://openaitools.app/tool/supermemory-1) | 156,579 | -7.7% | Contact for Pricing | A memory and continual-learning engine that gives any AI agent persistent context | semantic match | [.md](https://openaitools.app/tool/supermemory-1.md) |
| 9 | [metastory AI](https://openaitools.app/tool/metastory-ai) | 1,020 | +24.2% | Contact for Pricing | A contextual second brain for product managers and software teams | keywords 100%; semantic match | [.md](https://openaitools.app/tool/metastory-ai.md) |
| 10 | [Claude Code Club](https://openaitools.app/tool/claude-code-club) | 17,820 | +68.2% | Paid | Learn Claude Code and ship real apps, sites, and income streams | keywords 100% | [.md](https://openaitools.app/tool/claude-code-club.md) |
| 11 | [TreeMind (shutu.cn)](https://openaitools.app/tool/shutu-cn) | 28,547 | -34.2% | Freemium | Turn a sentence, an image or a document into an editable mind map | semantic match | [.md](https://openaitools.app/tool/shutu-cn.md) |
| 12 | [Pensieve.uk](https://openaitools.app/tool/pensieve-uk) | 1,593 | +9.5% | Contact for Pricing | The self-maintaining context layer that makes every AI you use accurate about your company | keywords 66%; semantic match | [.md](https://openaitools.app/tool/pensieve-uk.md) |
| 13 | [ZBrain](https://openaitools.app/tool/zbrain) | 11,674 | -22.5% | Free Trial, Paid, Contact for Pricing | One governed control layer for enterprise agentic AI | semantic match | [.md](https://openaitools.app/tool/zbrain.md) |
| 14 | [TinaMind](https://openaitools.app/tool/tinamind) | 10,461 | -22.4% | Freemium | Chat, map, draw and write in one AI workspace | semantic match | [.md](https://openaitools.app/tool/tinamind.md) |
| 15 | [Databrain](https://openaitools.app/tool/databrain) | 5,880 | -44.7% | Free Trial, Paid, Contact for Pricing | Governed agentic and embedded analytics on your own data warehouse | semantic match | [.md](https://openaitools.app/tool/databrain.md) |
| 16 | [LowTech AI](https://openaitools.app/tool/lowtech-ai) | 15,007 | -16% | Free | Fill-in-the-blank AI tools for everyday work | semantic match | [.md](https://openaitools.app/tool/lowtech-ai.md) |
| 17 | [Brain Pod AI (Charigent)](https://openaitools.app/tool/brainpod-ai) | 4,048 | +20.6% | Free Trial, Paid | All-in-one AI writing, image, chat and automation suite for teams | keywords 66% | [.md](https://openaitools.app/tool/brainpod-ai.md) |
| 18 | [Deta Surf](https://openaitools.app/tool/deta-surf) | 5,322 | -49% | Free | An intelligent notebook that turns browsing, files and video into notes | semantic match | [.md](https://openaitools.app/tool/deta-surf.md) |
| 19 | [2MarkDown.io](https://openaitools.app/tool/2markdown-io) | 8,899 | +0.4% | Freemium | Free browser-based Markdown converter with 37 tools for files, links and web content | semantic match | [.md](https://openaitools.app/tool/2markdown-io.md) |
| 20 | [Synced.so](https://openaitools.app/tool/synced-so) | 2,257 | -15.6% | Free Trial, Paid | Publish a branded Notion-powered help center and in-app widget in minutes | semantic match | [.md](https://openaitools.app/tool/synced-so.md) |
| 21 | [BuddyBeep](https://openaitools.app/tool/buddybeep) | 131 | +0.8% | Free | AI browser companion for chat, summaries and a personal knowledge base | keywords 100%; semantic match | [.md](https://openaitools.app/tool/buddybeep.md) |
| 22 | [Vana](https://openaitools.app/tool/vana-com) | 5,701 | -45.5% | Free | Open data infrastructure where people own and authorize the data behind AI | semantic match | [.md](https://openaitools.app/tool/vana-com.md) |
| 23 | [massCode](https://openaitools.app/tool/masscode) | 5,724 | -25.5% | Free | Free, open-source, local-first developer workspace for snippets, notes, APIs and diagrams | semantic match | [.md](https://openaitools.app/tool/masscode.md) |
| 24 | [CybeDefend](https://openaitools.app/tool/cybedefend) | 7,642 | +37.6% | Freemium, Contact for Pricing, Free | The security brain that keeps AI coding agents inside your rules | keywords 66% | [.md](https://openaitools.app/tool/cybedefend.md) |

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

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