LMDB++

LevelDB

LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.

RocksDB

A library that provides an embeddable, persistent key-value store for fast storage.

Hiredis

Minimalistic C client for Redis >= 1.2

Infinity

The AI-native database built for LLM applications, providing incredibly fast hybrid search of dense vector, sparse vector, tensor (multi-vector), and full-text.