# AI tools for “AI second brain” 64 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 | [Merlin AI](https://openaitools.app/tool/merlin-ai-plugins) | 1,382,634 | +13.1% | Freemium | One AI assistant that plugs ChatGPT, Claude and Gemini into every tab | semantic match | [.md](https://openaitools.app/tool/merlin-ai-plugins.md) | | 2 | [Lindy](https://openaitools.app/tool/lindy) | 323,329 | -0.2% | Freemium, Contact for Pricing | Hire an AI employee that connects to your stack and gets real work done | semantic match | [.md](https://openaitools.app/tool/lindy.md) | | 3 | [Vellum](https://openaitools.app/tool/vellum) | 331,901 | -20.8% | Freemium, Paid | A private, memory-powered AI assistant you own and customize | semantic match | [.md](https://openaitools.app/tool/vellum.md) | | 4 | [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | -6.5% | Freemium | Summarize, bookmark and write with AI right in your browser | semantic match | [.md](https://openaitools.app/tool/kome-ai.md) | | 5 | [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) | | 6 | [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% | [.md](https://openaitools.app/tool/dex-by-thirdlayer.md) | | 7 | [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) | | 8 | [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) | | 9 | [ERP.AI](https://openaitools.app/tool/erp-ai) | 30,915 | +19.6% | Freemium | Complete business systems your AI agent can operate like a person | semantic match | [.md](https://openaitools.app/tool/erp-ai.md) | | 10 | [Bika.ai](https://openaitools.app/tool/bika-ai) | 27,429 | -9.4% | Freemium | Build an agentic AI team that runs your workflows and data | semantic match | [.md](https://openaitools.app/tool/bika-ai.md) | | 11 | [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) | | 12 | [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) | | 13 | [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) | | 14 | [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) | | 15 | [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) | | 16 | [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) | | 17 | [ProMind AI](https://openaitools.app/tool/promind-ai) | 3,878 | -39% | Freemium | Personalized AI assistants that remember your context | semantic match | [.md](https://openaitools.app/tool/promind-ai.md) | | 18 | [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) | | 19 | [Writing.io](https://openaitools.app/tool/writing-io) | 7,197 | -10.9% | Contact for Pricing | One workspace for GPT, Claude, Gemini and Grok — with memory that follows you | semantic match | [.md](https://openaitools.app/tool/writing-io.md) | | 20 | [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) | | 21 | [NextBrain AI](https://openaitools.app/tool/nextbrain-ai) | 1,817 | +52.4% | Freemium, Contact for Pricing | Enterprise AI stack for predictive analytics, document intelligence and workflow automation | semantic match | [.md](https://openaitools.app/tool/nextbrain-ai.md) | | 22 | [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) | | 23 | [MyNextBrowser](https://openaitools.app/tool/mynextbrowser) | 1,807 | -36.4% | Freemium | Turn your existing browser into an agentic workspace | semantic match | [.md](https://openaitools.app/tool/mynextbrowser.md) | | 24 | [PaletteBrain](https://openaitools.app/tool/palettebrain) | 661 | 0% | Paid | ChatGPT in every macOS app, via a keyboard shortcut | semantic match | [.md](https://openaitools.app/tool/palettebrain.md) | Page 1 of 3 · [Next page →](https://openaitools.app/index.md?q=AI+second+brain&group=coding-development&page=2) For programmatic access use `https://openaitools.app/api/tools?q=…` or MCP `https://openaitools.app/api/mcp`. --- Source: https://openaitools.app/?q=AI%20second%20brain More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)