An uroboros program with 100+ programming languages

Fluentd: Unified Logging Layer (project under CNCF)

Chef Infra, a powerful automation platform that transforms infrastructure into code automating how infrastructure is configured, deployed and managed across any environment, at any scale

Create reports based on your log files. Supports Rails, Apache, MySQL, Delayed::Job, and other formats.

A Chef Cookbook manager

A framework to implement robust multiprocess servers like Unicorn

A GNU Social-compatible microblogging server

Sharing code snippets in-house

Expeditor provides asynchronous execution and fault tolerance for Microservices

Crawling Japanese laws

Kumogata is a tool for AWS CloudFormation. It can define a template in Ruby DSL.

Data Center Level Virtual Network Toolkit based on Edge Overlaid Network using OpenFlow 1.3.