ankane / pgsync

Sync data from one Postgres database to another

resque / resque

Resque is a Redis-backed Ruby library for creating background jobs, placing them on multiple queues, and processing them later.

AssetSync / asset_sync

Synchronises Assets between Rails and S3

reidmorrison / semantic_logger

Semantic Logger is a high-performance, asynchronous structured logging framework for Ruby and Rails.