LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.
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SeaweedFS is a distributed storage system for object storage (S3), file systems, Iceberg table buckets, and Lance vector buckets, designed to handle billions of files with O(1) disk access and effortless horizontal scaling.
A library that provides an embeddable, persistent key-value store for fast storage.
- database
- storage-engine
The local-first database that runs on every JS runtime and replicates with your existing backend - no vendor, no lock-in - https://rxdb.info/
Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, code-like database branching, and scale to zero.
Simple and fast JSON database
Database migrations. CLI and Golang library.
- go
- golang
- migration
- migrations
An efficient, small mobile key-value storage framework developed by WeChat. Works on Android, iOS, macOS, Windows, POSIX, and OHOS.
A Minimalistic Wrapper for IndexedDB
- javascript
- indexeddb
- database
- offline-storage
Highly available Prometheus setup with long term storage capabilities. A CNCF Incubating project.
- prometheus
- google-cloud-storage
- high-availability
- prometheus-ha-pairs
[MLsys2026 Best Paper]: https://arxiv.org/abs/2506.08276. RAG on Everything with LEANN. Enjoy 97% storage savings while running a fast, accurate, and 100% private RAG application on your personal device.
HydraDB - fast graph database on object storage
Garnet is a remote cache-store from Microsoft Research that offers strong performance (throughput and latency), scalability, storage, recovery, cluster sharding, key migration, and replication features. Garnet can work with existing Redis clients.
- cache
- cache-storage
- cluster
- concurrent
Cloud-native OSS search engine for observability
- rust
- log-management
- logs
- tantivy
Open-source, low-latency key/value engine built on Valkey with query subscriptions and hierarchical storage tiers.
Instant is the best backend for AI-coded apps. You get auth, permissions, storage, presence, and streams — everything you need to ship apps your users will love.
One Postgres for your application data, full-text search, vector retrieval, and aggregations. Home of the pg_search extension.
- sparse-vector
- hybrid-search
- bm25
- full-text-search
MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
- amazon-web-services
- database
- fulltext-search
- json
AlaSQL.js - JavaScript SQL database for browser and Node.js. Handles both traditional relational tables and nested JSON data (NoSQL). Export, store, and import data from localStorage, IndexedDB, or Excel.
The open-source observability database. One columnar engine for metrics, logs, and traces, on object storage.
- cloud-native
- rust
- metrics
- logs
HelixDB is an OLTP graph database with native vector and full-text search built in Rust on Object Storage.
Pikiwidb is a Redis-Compatible database developed by Qihoo's infrastructure team.
TranslatedAutomatically deletes WeChat cache data on Windows and Mac computers, including the large amount of files, videos, images, and other content automatically downloaded from all chats, freeing up your space.
Apache OpenDAL: One Layer, All Storage.