This is a similar application to PC Backup, both are software managed backups which are open sourced and free as in beer. I will be doing a review of this software if time permits, as it does look really good instead of manual rsync backups.

RESTORE 4.0a28-1 (Default branch) - RESTORE is an enterprise network backup and recovery solution for Windows, Novell, Mac OS X (data fork), Unix, and Linux systems. It is scalable to a complete backup solution for multiple workstations, servers, and data centers. It operates over local area networks, wide area networks, and the Internet.

This application suite is quite the AIO (All in One). I have used eGroupware, and was a joy. I was trying to find more projects to create in it than actually using it to manage them. This is defiantly an application you want to check out and play around with.

OfficeSpot.Net Collaboration Server Preview 2 (Default branch) - The OfficeSpot.Net Collaboration Server is a
one-stop solution for all your groupware needs. It
is based on Ubuntu 6.06 LTS and is preloaded with
eGroupWare, Postfix, OpenLDAP, MySQL, DBMail,
Spamassasin, and ClamAV.

License: GNU General Public License (GPL)

Changes:
This release contains updated versions of eGroupWare (1.4), DBMail (latest stable SVN revision), and ClamAV (0.90.3). The installation process was streamlined and the online documentation was updated.

[FreshMeat]

This looks to be a brilliant application that allows you to managing you accounting very easily. As a small time contractor, this is the ideal application.

PHP Accounts 0.5.1 (Default branch) -
PHP Accounts is a simple and easy to use Web-based
client and accounts application of particular use
to freelancers or consultants. As well as basic
management of clients, income, and outgoings,
features include Generation of PDF invoices,
recording timesheets, CSV export, an invoice
wizard for quickly generating client invoices, and
automatic email reminders to clients for unpaid
invoices.

License: GNU General Public License (GPL)

Changes:
some changes have been added to increase compatibility with more environments. PHP 5 support was tested (slightly).

[FreshMeat]