Show HN: Retain – A unified knowledge base for all your AI coding conversations (github.com)

A new macOS application called Retain has been unveiled, designed to create a unified knowledge base for users of various AI tools, including Claude Code, ChatGPT, and claude.ai. The app aggregates AI conversations, automatically extracts learnings such as user preferences and corrections, and allows seamless syncing across multiple platforms. Unlike previous tools, which often had scattered context, Retain helps users build persistent context by enabling instant full-text searches across thousands of conversations and integrating learned preferences into the Claude environment. The introduction of Retain is significant for the AI/ML community as it addresses a common pain point: managing and retaining information across diverse AI interfaces. This functionality aims to streamline workflows and improve efficiency by reducing repetitive explanations. Key features include local data storage, an opt-in Gemini API for enhanced analysis, and future plans for expanding automation capabilities. As the app is in beta, feedback from early users is encouraged to refine its functionalities and enhance the integration of additional tools, making it a promising resource for developers and AI enthusiasts looking to optimize their interaction with AI systems.