Appwrite
Appwrite is a mature, open-source backend platform rather than an AI product itself, and it has grown into a credible data layer for AI apps: VectorsDB now handles embeddings and similarity search next to auth, functions and storage, so a small RAG or agent project no longer needs a separate vector store. Teams with very large vector workloads or exotic retrieval needs will still compare it against a dedicated vector database.
Pros
- Open-source with a large GitHub community, so self-hosting is a real option
- Covers auth, databases, storage, functions, and realtime in one platform instead of five
- Native VectorsDB for embeddings and similarity search, plus an MCP server for coding agents
- Free tier is usable for real small projects, not just a demo
Cons
- Production usage at scale requires ongoing spend, and dedicated database compute is billed on top of Pro
- The pricing model now spans plan fees, overage and per-database compute tiers, which takes work to forecast