Free open source alternative app list of AI Knowledge Base / RAG :

FastGPT

Key features Open-source platform for building AI-powered knowledge bases and question-answering systems Uses Retrieval-Augmented Generation (RAG) to combine large language models with custom data sources Supports knowledge ingestion, indexing, and natural-language querying Vector search capabilities for retrieving relevant context from documents Chatbot workflow tools for creating conversational AI agents Flexible integration with various LLM providers Platforms: Linux, macOS, Windows Links Official Website Source Code Pricing: Free — self-hosted, free and open-source under the MIT license.

FreeWindowsmacOSLinux

Others are looking for free open source alternatives of following apps:

AI & Machine Learning

Free open-source AI & machine learning tools.

AI Agent Builder

AI Agent Builder is a platform for creating, deploying, and managing AI agents.

Acorn 7

Acorn 7 is a Mac image editor for editing photos and creating graphics.

Ad Blocker

Ad Blocker is a browser tool that removes intrusive ads and pop-ups from web pages.

AdGuard

AdGuard is a cross-platform ad blocker that filters web content and protects privacy.

Adobe Premiere Pro

Adobe Premiere Pro is a professional video editing software for film, TV, and web.