The Apache Commons Sandbox

The Sandbox is a Subversion repository for Commons committers to function as an open workspace for sharing and collaboration. The Sandbox serves as a staging ground for project which are destined for what is known as the Commons Proper.
Sandbox
BeanUtils2 Redesign of Commons BeanUtils.
ClassScan Find Class interfaces, methods, fields, and annotations without loading.
CLI2 Redesign of Commons CLI.
Convert Commons-Convert aims to provide a single library dedicated to the task of converting an object of one type to another.
Finder Java library inspired by the UNIX find command.
Flatfile Java library for working with flat data structures.
Graph A general purpose Graph APIs and algorithms.
I18n Adds the feature of localized message bundles that consist of one or many localized texts that belong together. Think of an error message that consists of title, text, summary and error details.
Id Id is a component used to generate identifiers.
Inject Implementation of JSR 330, a standards compliant dependency injection framework
Javaflow Continuation implementation to capture the state of the application.
JNet JNet allows to use dynamically register url stream handlers through the java.net API.
Monitoring Monitoring aims to provide a simple but extensible monitoring solution for Java applications.
Nabla Nabla provides automatic differentiation classes that can generate derivative of any function implemented in the Java language.
OpenPGP Interface to signing and verifying data using OpenPGP.
Performance A small framework for microbenchmark clients, with implementations for Commons DBCP and Pool.
Pipeline Provides a set of pipeline utilities designed around work queues that run in parallel to sequentially process data objects data objects.
The Apache Commons Sandbox - Google Summer of Code Projects

Google Summer of CodeTM is a global program that offers student developers stipends to write code for various open source software projects. The Apache Software Foundation participates in the program every year.

See the Google Summer of Code space in Commons Sandbox for details.
Status of the Sandbox Components

Check the status of a sandbox component on the sandbox wiki page or just ask on one of the commons mailing lists.

A Sandbox component is considered active if there is a definite plan for promotion to the Commons Proper and there is an active group of existing committers working on a component.

A Commons Sandbox component is considered dormant if there is little recent development activity and no individual or group of individual commiters has emerged to champion its ultimate promotion to Commons Proper. See the Commons dormant components webpage for a list of Commons components currently considered dormant.

A Commons Sandbox component is considered inactive if there is no active development for a sustained period of time.