Apache Druid: a high performance real-time analytics database.

Distributed and fault-tolerant realtime computation: stream processing, continuous computation, distributed RPC, and more

Ribbon is a Inter Process Communication (remote procedure calls) library with built in software load balancers. The primary usage model involves REST calls with various serialization scheme support.

Fast scalable time series database

Open source tools for building custom schedulers on Amazon ECS

Waltz is a quorum-based distributed write-ahead log for replicating transactions

A Transactional Metadata Store Backed by Apache Kafka