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About

Kortex is a browser extension that turns Google’s NotebookLM into an interconnected, dynamic knowledge base, helping users stop losing ideas by capturing and organizing valuable insights that would otherwise remain trapped in chat histories and scattered tabs. It lets you archive full AI conversations from services like ChatGPT, Gemini, Claude, and Perplexity with one click and save any highlighted text on a webpage as a perfectly cited source directly to NotebookLM. Kortex also offers effortless exporting of sources, chats, or curated notes into Markdown, JSON, or a downloadable .zip file, and integrates with Google Docs so you can send documents to NotebookLM with a single click. For notebook management, Kortex enables bulk deletion of multiple notebooks from the dashboard at once. Designed to help users find anything they’ve saved and never lose an insight again, Kortex installs in seconds and supports thousands of users building their own “second brain”.

About

Second Brain is an AI-powered research, planning, and productivity platform that lets you build an “AI visual board”—a knowledge base where you can upload documents, articles, videos, audio, GitHub repos, websites, ChatGPT responses, and more, then interact conversationally with all your content. Backed by GPT‑4.5, Claude, Grok 3, DeepSeek R1, and similar top-tier AI models, Second Brain enables instant summarization, searchable Q&A, multilingual interaction (e.g., chat in English with Spanish content), and automated transformation of text into natural, undetectable human‑sounding copy. You can save AI chat responses as richly formatted, shareable pages, then continue building on them with headings, to‑do lists, images, code blocks, or links. A Chrome extension lets you capture web pages, text, images, screenshots, and ChatGPT outputs in one click for instant organization.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Researchers, students, and knowledge workers who want to capture, organize, and save AI chats and web research into a unified, searchable knowledge base

Audience

Researchers, creators, solopreneurs, marketers, and developers needing a tool to capture, organize, and interact with diverse content using AI to accelerate insights, creativity, and productivity

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version
Free Trial

Pricing

$6 per month
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Kortex
Founded: 2025
USA
yaksh1.github.io/Kortex-Landing-Page/

Company Information

SecondBrain
United States
www.thesecondbrain.io

Alternatives

Alternatives

Yatter

Yatter

Infokey Technology Private Limited

Categories

Categories

Integrations

ChatGPT
Claude
Claude Sonnet 3.7
DeepSeek R1
GPT-4.1
GPT-4.1 mini
GPT-4.5
Gemini
Gemini Notebook
GitHub
Google Chrome
Google Docs
Grok 3
Instagram
Loom
Perplexity
TikTok
YouTube

Integrations

ChatGPT
Claude
Claude Sonnet 3.7
DeepSeek R1
GPT-4.1
GPT-4.1 mini
GPT-4.5
Gemini
Gemini Notebook
GitHub
Google Chrome
Google Docs
Grok 3
Instagram
Loom
Perplexity
TikTok
YouTube
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