Viper is a complete configuration solution for Go applications including 12-Factor apps. It is designed to work within an application, and can handle all types of configuration needs and formats.

PostgresqlCO.NF (CONF for short) is a postgresql.conf documentation and ultimate recommendations’ source to help you tune and optimize all of your PostgreSQL configuration. With around 290 configuration parameters in postgresql.conf (and counting), it is definitely a difficult task!

A template for PostgreSQL High Availability with ZooKeeper, etcd, or Consul.

Izanami is a shared configuration, feature flipping and A/B testing service perfectly well suited for micro services environment written in scala and developed by the MAIF OSS team.
Izanami provides a friendly UI for non-tech users as an HTTP REST API you can call using you favorite language.

Izanami also provides first class integration. Java, Scala, Node and React and CLI clients are available to integrate Izanami with your application.

Flagr is an open source Go service that delivers the right experience to the right entity and monitors the impact. It provides feature flags, experimentation (A/B testing), and dynamic configuration. It has clear swagger REST APIs for flags management and flag evaluation.

Gixy is a tool to analyze Nginx configuration. The main goal of Gixy is to prevent security misconfiguration and automate flaw detection.

Neutrino is a companion tool which lets you build web and Node.js applications with shared presets or configurations. It intends to make the process of initializing and building projects much simpler by providing minimal development dependencies.

Observatory by Mozilla is a project designed to help developers, system administrators, and security professionals configure their sites safely and securely.

A simple GUI to set up virtual machines for Web development.

Packer is a tool for creating identical machine images for multiple platforms from a single source configuration.

Oh-My-Zsh is an open source, community-driven framework for managing your ZSH configuration. It comes bundled with a ton of helpful functions, helpers, plugins, themes, and a few things that make you shout...

Ansible is a powerful automation engine that makes systems and apps simple to deploy.
Ansible's natural automation language allows sysadmins, developers, and IT managers to complete automation projects in hours, not weeks.
Ansible uses SSH by default instead of requiring agents everywhere. Avoid extra open ports, improve security, eliminate "managing the management", and reclaim CPU cycles.
Ansible automates app deployment, configuration management, workflow orchestration, and even cloud provisioning all from one system.