Find the right API
Use search when the broad directory stops being enough. Filter by category, auth, CORS, signup friction, and result freshness until the shortlist becomes obvious.
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Sort by verification or response time when the final call is about reliability, not just category fit.
9 results after 1 active filters. Remove any one below without losing the rest of the cut.
Appwrite
Appwrite Server API is open-source Firebase alternative — auth, database, storage, functions, messaging integrated backend-as-a-service.
DeepSeek API
DeepSeek API provides China's top open-source LLMs — DeepSeek-V3, DeepSeek-Coder, etc.; known for extreme cost-effectiveness + open-source strategy + inference performance.
Home Assistant API
Home Assistant API is the local control interface for the open-source smart home platform — device states, automations, scenes, cross-vendor integrations (2500+ integrations).
HuggingFace API
HuggingFace API provides open-source AI model hub (300k+ models), inference endpoints, datasets, Spaces app hosting — the center of open-source AI ecosystem.
Mistral AI API
Mistral AI API provides Mistral Large / Mistral Small / Mistral NeMo / Codestral — European open-source / hybrid LLMs, the European answer to OpenAI.
PocketBase API
PocketBase is open-source Go single-binary BaaS (auth + DB + storage + realtime) — single-file deployment, zero ops; ultra-minimal Firebase alternative.
Qdrant API
Qdrant is an open-source vector database written in Rust — excellent performance (Rust-based), clean API, growing ecosystem; main open-source alternative to Pinecone.
Supabase API
Supabase is open-source Firebase alternative — Postgres SQL database + auth + storage + realtime + edge functions + vector embeddings.
Weaviate API
Weaviate is an open-source vector database — supports vector search + keyword search + built-in vectorization (OpenAI/Cohere/HuggingFace and other models).