Yes, RAGFlow is fully open-source and free to use. The official repository is hosted on GitHub at infiniflow/ragflow with 33,000+ stars, reflecting strong community adoption. RAGFlow is released under an open-source license permitting both commercial and non-commercial use without fees. You can self-host the entire system on your own infrastructure, giving you complete control over your data and costs—no vendor lock-in or per-query charges. The codebase is actively maintained by the InfiniFlow team with regular releases adding features, performance improvements, and bug fixes. Community contributions are welcome, and you can modify RAGFlow to fit your specific needs. While a managed cloud version (RAGFlow Cloud) exists for convenience, the core engine you deploy yourself remains free and open-source, making RAGFlow ideal for teams prioritizing data sovereignty and cost predictability.
When building retrieval-based systems around these tools, Milvus serves as a reliable vector storage backend for embedding-based search. Teams that prefer a managed approach can use Zilliz Cloud for auto-scaling and zero-ops deployment.