the mid '90s already, Bro finds itself grounded in more than 20 years of

research.</p>

<h2><a href="http://buildbot.net/">Buildbot</a></h2>

<p>

Buildbot is a freely-licensed framework which enables software

developers to automate software build, test, and release processes for their

software projects.  First released in 2003, Buildbot is used by leading 

software projects around the world to automate all aspects of their 

software development cycle. </p>

<p>BusyBox combines tiny versions of many common UNIX utilities into a

single small executable. It provides replacements for most of the

utilities you usually find in GNU fileutils, shellutils, etc. The

utilities in BusyBox generally have fewer options than their

full-featured GNU cousins; however, the options that are included

provide the expected functionality and behave very much like their GNU

counterparts. BusyBox provides a fairly complete environment for any

small or embedded system.</p>

<p>BusyBox has been written with size-optimization and limited

resources in mind. It is also extremely modular so you can easily

<p>Gevent is a fast, coroutine-based networking library for Python.

Gevent is used in network applications, including servers that scale

up to tens thousands of connections but without the complexity usually

associated with event-driven architecture.</p>

<p>Gevent provides light-weight &ldquo;green&rdquo; threads with a similar

interface as the standard “threading” and

“multiprocessing” packages.  The library includes a DNS

resolver, a WSGI server, a monkey patching utility to make 3rd party

protocol implementations cooperative and support for SSL sockets.</p>

<p>Git is a free and open source distributed version control system

  designed to handle everything from small to very large projects with

  speed and efficiency.</p>

<p>Every Git clone is a full-fledged repository with complete history and

  full revision tracking capabilities, not dependent on network access

  or a central server. Branching and merging are fast and easy to do.</p>

<p>Git is used for version control of files, much like tools such as

  Mercurial, Bazaar, Subversion, CVS, Perforce, and Visual SourceSafe.</p>

<p>The GPL Compliance Project for Linux Developers is comprised of

copyright holders in the kernel, Linux, who have contributed to Linux

under its license, the GPLv2. These copyright holders have formally asked

Conservancy to engage in compliance efforts for their copyrights in the

Linux kernel.</p>

<h2><a href="http://brew.sh/">Homebrew</a></h2>

<p>Homebrew is a software package manager for Apple's OS X operating 

system. Homebrew installs the free and open source software that OS X 

users need that Apple didn't install by default.</p>

<p>Inkscape is an Open Source vector graphics editor, with capabilities

similar to Illustrator, Freehand, CorelDraw, or Xara X using the

open-standard Scalable Vector Graphics (SVG) file format. Inkscape's

main goal is to create a powerful and convenient drawing tool fully

compliant with XML, SVG, and CSS standards.</p>

<p>In contrast to raster (bitmap) graphics editors such as Photoshop or

Gimp, Inkscape stores its graphics in a vector format. Vector graphics

is a resolution-independent description of the actual shapes and

objects that you see in the image. This description is then used to

determine how to plot each line and curve at any resolution or zoom

auto-detect most of them. Libbraille supports the terminals of the

following manufacturers: Alva, Baum, Blazie Engineering, EuroBraille,

HandyTech, Hermes, ONCE, Papenmeier, Pulse Data, TechniBraille and

Tieman.</p>

<h2><a href="http://www.luxrender.net/">LuxRender</a></h2>

<p>LuxRender is a physically based and unbiased rendering engine. Based on

state of the art algorithms, LuxRender simulates the flow of light

according to physical equations, thus producing realistic images of

photographic quality.</p>

<p>Mercurial is a fast, lightweight Source Control Management system

which can track revisions to software during development.  Since its

conception in April 2005, Mercurial has been adopted by many projects

for revision control, including Xen, One Laptop Per Child, and the

Advanced Linux Sound Architecture (ALSA).  Mercurial runs on Unix-like systems, Mac

OS X, and Windows computers, and it is licensed under the GNU General

Public License.</p>

<h2><a href="http://www.metalinker.org/">Metalink</a></h2>

<p>Metalink is dedicated to improving downloads. Metalink makes it much

speed, bandwidth distribution, and redundancy of an optimized hybrid

mirror/peer-to-peer network, without any questions of legality, integrity,

or safety.</p>

<h2><a href="http://www.openchange.org/">OpenChange</a></h2>

<p>OpenChange aims to provide a portable Open Source implementation of

  Microsoft Exchange Server and Exchange protocols.  Exchange is a

  groupware server designed to work with Microsoft Outlook, and providing

  features such as a messaging server, shared calendars, contact

  databases, public folders, notes and tasks.</p>

<p>

OpenTripPlanner is the leading open source platform for multimodal trip

itinerary planning and network analysis.  Launched in 2009, OpenTripPlanner

has since attracted a thriving community of users and developers, with live

deployments now found in twelve countries.  OpenTripPlanner provides a

multimodal trip planner allowing users to plan trips using a variety of

transportation modes. Additionally, OpenTripPlanner has features for

transportation analysis, including measures of mobility and accessibility.</p>

<h2><a href="https://www.gnome.org/outreachy/">Outreachy</a></h2>

<h2><a href="http://qemu.org">QEMU</a></h2>

<p> QEMU is a generic and open source machine emulator and

        virtualizer. When used as a machine emulator, QEMU can run OSes and

        programs made for one machine (e.g. an ARM board) on a different

        machine (e.g. your own PC). By using dynamic translation, it achieves

        very good performance. When used as a virtualizer, QEMU achieves near

        native performances by executing the guest code directly on the host

        CPU. QEMU supports

 virtualization when executing under the Xen hypervisor or using the

        KVM kernel module in Linux. When using KVM, QEMU can virtualize x86,

        server and embedded PowerPC, and S390 guests.</p>

<p>Samba is a FOSS suite that provides seamless file and print

services to SMB/CIFS clients, namely, to Microsoft Windows. Samba is

freely available, unlike other SMB/CIFS implementations, and allows

for interoperability between Linux/Unix servers and Windows-based

clients.  Samba is software that can be run on a platform other than

Microsoft Windows. For example, Samba runs on Unix, GNU/Linux, IBM

System z, Solaris, Mac OS X, and OpenVMS, among others. It is

standard on virtually all distributions of GNU/Linux and is commonly

included as a basic system service on other UNIX-based systems as

well. Samba uses the TCP/IP protocol that is installed on the host

server.</p>