AI writing & content

AI note-taking & second brain: the tech stack of 15 real products

Notes, knowledge capture and personal knowledge bases with AI search or summaries.

What they chose, decision by decision

Among the AI note-taking & second brain that show each choice, from makers' products and open-source code alike.

Database10 products

Frontend Framework9 products

Next.js8 · 89%

React6 · 67%

Small samples, fewer than 8 products: LLM API (OpenAI API 5, Gemini API 5) · Payments (Stripe 4, Polar 2) · AI SDK & Agent Framework (LangChain 4, AI SDK 2) · Hosting (Cloudflare 2, Netlify 1) · Product Analytics (PostHog 5) · Transactional Email (Resend 5) · Backend Framework (FastAPI 3, Express 2) · Authentication (Clerk 3) · Database Access & ORMs (Drizzle ORM 2, SQLAlchemy 1) · Vector Database (pgvector 2, Pinecone 1)

AI note-taking & second brain we track

14 makers' products and 1 open-source projects. Makers' products first.

ResurfA Personal Context Library for Mac

SourclipThe research workspace built around Gemini Notebook.

AmurexOrganize, retrieve, and act on information effortlessly

Buddy AI NoteThe daily note that fills itself

FunBlocks MindMaxWork, Learn, Explore with AI-powered Whiteboard and MindMap

RecallAI knowledge base that saves and summarizes articles, videos, podcasts, PDFs and notes, links related ideas in a graph and lets you chat with or quiz yourself on your content.

DeepmarkSearch your bookmarks by what's inside them, not the title

InstaNoteTransform Your Ideas into Notes

Lookie AI100x Smarter and Faster YouTube Watching, Just 1 Click!

note-companionNote Companion: AI assistant for Obsidian that goes beyond just a chat. (prev File Organizer 2000)

+13

SurfSenseAir gapped, privacy focused open source NotebookLM alternative. Join our Discord: https://discord.gg/ejRNvftDp9

khojYour AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research. Turn any online or local LLM into your personal, autonomous AI

screenpipeYC (S26) | Open Computer History | Record your screen continuously locally and provide context to your agents (Claude, Codex, Openclaw, Hermes, Runner...)

open-notebookAn Open Source implementation of Notebook LM with more flexibility and features

EverRoom EverRoom - A workspace that remembers your projects, decisions, and sources.