Yapgan
Yapgan is a self-hosted, AI-powered second brain tool that helps users capture, organize, and retrieve knowledge with features like Git-style versioning, GPT integration, and knowledge graph visualization.
https://yapgan.com/?ref=producthunt
Product Information
Updated:Oct 28, 2025
What is Yapgan
Yapgan is a comprehensive knowledge management system designed to serve as your digital second brain. It combines modern AI capabilities with traditional note-taking features to help users capture and organize information from any source. As a self-hosted solution, it offers users complete control over their data while providing powerful tools for knowledge capture, retrieval, and connection.
Key Features of Yapgan
Yapgan is a self-hosted second brain tool that combines knowledge management with AI capabilities. It features git-like version control for notes, AI-powered chat interactions, knowledge graph visualization, one-click web capture, and public note sharing functionality. The platform aims to help users capture, organize, and retrieve information efficiently while maintaining a complete history of their knowledge evolution.
Git-like Version Control: Maintains full version history for every note with visual timeline and diff viewer, allowing users to track how ideas evolve and restore previous versions
AI-Powered Chat Interface: Integrated GPT-5 nano allows users to ask questions about their notes, generate summaries, and derive insights from their knowledge base in their preferred language
Knowledge Graph Visualization: Creates visual representations of note connections using wikilinks, featuring automatic backlinks and an Obsidian-like linking system
Web Capture Extension: Enables one-click saving of highlighted text from any website with built-in markdown preview and side panel functionality
Use Cases of Yapgan
Research Documentation: Researchers can capture and organize research findings, maintain version history, and use AI to generate insights from collected information
Knowledge Management for Developers: Software developers can store code snippets, documentation, and technical notes with version control and easy retrieval through semantic search
Content Creation: Writers and content creators can collect references, organize ideas, and publish notes with SEO-friendly formatting
Pros
Self-hosted solution providing privacy and control
Comprehensive version control system
AI-powered features for enhanced knowledge management
Cons
Requires self-hosting setup and maintenance
May have higher technical requirements compared to cloud solutions
How to Use Yapgan
Install Yapgan: Get started by installing the self-hosted Yapgan application from GitHub (https://github.com/muhammedikinci/yapgan)
Highlight Text: Select/highlight any text on webpages that you want to save
Save Note: Add a title and tags to the highlighted content and click save to store it in your knowledge base
Link Notes: Connect related notes using [[wikilinks]] to build your knowledge graph
Search with AI: Use the built-in GPT-5 nano AI to search through your notes, get summaries, and generate insights
View History: Access the version history of any note to see how your ideas evolved over time and restore previous versions if needed
Share Notes: Optionally publish notes publicly with custom URLs for sharing knowledge with others
Yapgan FAQs
Yapgan is a self-hosted second brain tool that helps users capture, organize, and search knowledge with AI capabilities.
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