Zipline is a financial backtester for trading algorithms written in Python. The system is fundamentally event-driven and a close approximation of how live-trading systems operate.

Zipline is currently used in production as the backtesting engine powering Quantopian (https://www.quantopian.com) -- a free, community-centered platform that allows development and real-time backtesting of trading algorithms in the web browser.

Togglz is an implementation of the Feature Toggles pattern for Java. Feature Toggles are a very common agile development practices in the context of continuous deployment and delivery. The basic idea is to associate a toggle with each new feature you are working on. This allows you to enable or disable these features at application runtime, even for individual users.

The Bastille Hardening program "locks down" an operating system, proactively configuring the system for increased security and decreasing its susceptibility to compromise. Bastille can also assess a system's current state of hardening, granularly reporting on each of the security settings with which it works.

Bastille currently supports the Red Hat (Fedora Core, Enterprise, and Numbered/Classic), SUSE, Debian, Gentoo, and Mandrake distributions, along with HP-UX. It also supports Mac OS X. Bastille's focuses on letting the system's user/administrator choose exactly how to harden the operating system. In its default hardening mode, it interactively asks the user questions, explains the topics of those questions, and builds a policy based on the user's answers. It then applies the policy to the system. In its assessment mode, it builds a report intended to teach the user about available security settings as well as inform the user as to which settings have been tightened.

Never write a single javascript line anymore to validate your forms FrontEnd. Parsley will do that for you and do it right, thanks to its powerful DOM-API !

GLPI is the Information Resource-Manager with an additional Administration- Interface. You can use it to build up a database with an inventory for your company (computer, software, printers...). It has enhanced functions to make the daily life for the administrators easier, like a job-tracking-system with mail-notification and methods to build a database with basic information about your network-topology.

Dewpoint is a command line tool for interacting with cloud servers.

Usage: dewpoint [options] ...

Commands:

create-node Create a new node

destroy-node Destroy an existing node

find-node Find an existing node by name

list-nodes List all existing nodes

list-sizes List all valid server sizes

list-images List all available server images

help Return more detailed help on command

I was going to write something like this myself (for an experimental fully automated continuous deployment pipeline using only open-source tools) but this looks promising so maybe I won't have to.

SVN Access Manager is a powerful tool for managing access to subversion repositories. The tool provides user and group management and access rights (read /write) to dedicated paths in a repository as well.

SVN Access Manager uses projects to give users the rights to manage their own modules in a repository. Project is used substitutionary for a toplevel directory.

Tahoe-LAFS is a Free and Open cloud storage system. It distributes your data across multiple servers. Even if some of the servers fail or are taken over by an attacker, the entire filesystem continues to function correctly, including preservation of your privacy and security.

A one-page summary explains the unique properties of this system.

Deltacloud provides the API server and drivers necessary for connecting to cloud providers.

Deltacloud maintains long-term stability for scripts, tools and applications and backward compatibility across different versions.

Using single API Deltacloud enables management of resources in different clouds.

Start an instance on an internal cloud, then with the same code start another on EC2 or RHEV-M.

MediaGoblin is a free software media publishing platform that anyone can run. You can think of it as a decentralized alternative to Flickr, YouTube, SoundCloud, etc. It's also:

* The perfect tool to show and share your media! * Building tools to empower the world through decentralization! * Built for extensibility. Multiple media types, including video support! * Part of the GNU project and devoted to user freedom. * Powered by a community of people like you.