redis / redis

In-memory data structure store used as a cache, database, message broker, and vector/document query engine.

apache / kafka

Distributed event streaming platform for building high-throughput data pipelines and streaming applications.

ModernRelay / omnigraph

Object-storage native graph database with git-style branching, a typed ontology, and hybrid graph, vector, and full-text retrieval over Lance files.

elastic / elasticsearch

Free and open source distributed RESTful search and analytics engine built on Apache Lucene.

apache / spark

Unified analytics engine for large-scale data processing with APIs in Scala, Java, Python, and R.

ClickHouse / ClickHouse

Column-oriented database management system for generating analytical data reports in real time.

seaweedfs / seaweedfs

Distributed file and object storage system that serves S3, POSIX file system, and Iceberg/Lance table access from one Go binary.

kestra-io / kestra

Open-source event-driven orchestration platform for scheduling and running data, AI, and infrastructure workflows defined in YAML.

hydra-db / hydradb

Distributed graph database in Rust that stores its data durably on S3-compatible object storage and serves OpenCypher over Bolt and HTTP.