Vagrant is a tool for building and distributing development environments.

Etherpad: A modern really-real-time collaborative document editor.

Prevents you from committing secrets and credentials into git repositories

Automated installation of the Microsoft IE App Compat virtual machines

Vim distribution

A window management application (replacement for Divvy/SizeUp/ShiftIt)

Asynchronous Http and WebSocket Client library for Java

Manage your Ruby application's gem dependencies

JRuby, an implementation of Ruby on the JVM

Easily check your clusters for use of deprecated APIs

Small set of tools for JVM troublshooting, monitoring and profiling.

A virtual machine for Ruby on Rails core development

The easiest way to integrate Maven into your project!

An agile project planning tool

A capistrano/rails plugin that makes it easy to deploy/manage/scale to various service providers, including EC2, DigitalOcean, vSphere, and bare metal servers.

Builders and buildpacks designed to run on Google Cloud's container platforms

3D printed DSLR tracking mount

Pokemon Go API

A more featureful runner for sbt, the simple/scala/standard build tool

Warbler chirpily constructs .war files of your Ruby applications.

Design-First Web Framework

Heroku .NET Core Buildpack

Example of http (micro)service in Scala & akka-http

Toolchain and libraries for C/C++ programming on the TI-84+ CE calculator series

TorqueBox Ruby Platform

Web server for Rails/Rack applications built upon JRuby::Rack and Apache Tomcat

SSH key management for GitHub users

Minecraft: Pi Edition API Python Library

PerfJ is a wrapper of linux perf for java programs.

the Rules Engine for Ruby