Freeware... because the software police will eventually carry mace.

AVG Free Edition


free.avg.com
Windows, Linux
Have Windows?  You need to worry about all kinds of security problems.  AVG will do a decent job of keeping your computer virus free... for free!
Please note that the free addition is only licensed for home/personal use.

NeoOffice


neooffice.org
Mac OSX
What could be better than the free feature-rich OpenOffice program suite?  How about an OSX native  version (no need for X11)!  In addition to word processing, spreadsheets, and presentations with NeoOffice you can create drawing documents, HTML pages, business cards, and master templates.

Image Tricks


www.belightsoft.com
Mac OSX
This is not so much a image editing program as it is a image manipulation program. With Image Tricks you can apply a large number of effects to pictures using the core image filters built into OS 10.4.

SpamPal


www.spampal.org
Windows
An in genius open source program which works to filter out spam email on your Windows computer.  The program works by actively monitoring traffic coming into the POP and IMAP ports, and therefore does not need to be setup for a specific email client (making the setup very simple and effective).

SpiceWorks


www.spiceworks.com
Windows
Is a network monitoring and inventory type software.  It can track and give all kinds of details about nodes on your network (PCs, Switches, Routers, Printers, etc). Unfortunately it must be run from Windows. But it can report on OSX, Linux, and Unix stations just fine.

SyncBack


www.2brightsparks.com
Windows
A simple yet powerful backup utility for Windows.  Can be used to backup or synchronize critical folders to backup drives, or network shares.  Contains many advanced options like email notifications, encryption, compression, filtering, and will even close active programs if you like.

MacSaber


blog.isnoop.net
Mac OSX
Turns your Macbook into a virtual light saber!

Bonjour Browser


www.tildesoft.com
Mac OSX
The application will scan the LAN for any nodes which are Bonjour enabled, and present them in a single window.

Transmission


www.transmissionbt.com
Mac OSX
My favorite Bittorrent Client. Extremly Lightweight with just the right amount of features.

Galerie


myriad-online.com
Mac OSX
A favorite of elementary teachers who take large amounts of pictures.  Galerie is an easy way to make great looking web pages to showcase pictures.  Just point the program to either a folder of pictures or iphoto album, specify a few settings, select a template, and the program will create a nice looking web site with click-able thumbnails of the photos.  All you have to do to publish is throw the entire folder created on the district web server.  There are a large number of user created templates you can download from the publisher's web site.

Tiler


www.mindcad.com
Mac OSX
A small application used to break up and print PDFs on multiple 8.5 x 11 pages. An easy way to make those long banners that line the school hallways.

Onyx


http://www.titanium.free.fr
Mac OSX
There are many system utilities people have written to access the hidden command-line options in OSX.  Onyx is my favorite of the bunch.  It allows you to do such things as show hidden files/folders, deactivate dashboard, alter the login window, increase the speed of Safari, clean every cache, run maintenance scripts, etc.

Klondike Forever


solitaireforever.com/klondike/
Mac OSX, Windows
Fast-pased 3D Solitare.

KeyPass


keepass.info
Mac OSX, Windows, Linux
A lightweight open source password manager.  The perfect way to keep track of passwords and other sensitive notes.  KeePass is a strongly encrypted database which is searchable, portable, and is unlocked with a single master password or password disk (for the 007 types).

iRedLight


www.filewell.com
Mac OSX
Greatly extends the use for that tiny Apple remote that came with newer Macs. It allows the remote to control many system actions and programs including PowerPoint, NeoOffice, and QuickTime. Comes in very handy for presentations in and out of the classroom. The remote buttons can also be mapped to applescripts (the possibilities are endless).

SMARTReporter


corecode.at/smartreporter/
Mac OSX
Monitor your OS X (or OS X Server) hard drive/s. SMARTReporter runs in the background and periodically checks the SMART status of your hard drives.  SMART is a technology installed in the firmware of hard drives which detects hardware failures, or impending failures.  SMARTReporter can be set to popup alerts or send an email if there is a problem.

Disk Inventory X and WinDirStat


windirstat
Mac OSX, Windows
Both programs are similar in function.  DiskInventory X works in OSX, WinDirStat in Windows.  When opened both programs index the files and folders on your hard drive (this could take awhile), then display the sizes of said files and folders graphically.  This helps answer two important questions:
1.  "Who is taking up all the space on my file server" - Network Admin
2.  "How do I get rid of this message saying my startup disk is full" - User

Perian


www.perian.org
Mac OSX
Help Quicktime be all that it can be with Perian. This utility will allow Quicktime to play a wide range of video formats it otherwise would not support, like the popular DivX.

PDFCreator


pdfcreator
Windows

Every Mac user knows that you can create a PDF directly from any print job in OSX.  But did you know you can get the same functionality in Windows?  Enter PDF Creator.  A free tool which will act as a virtual printer, and create PDF files from any print job.

Tux Paint


www.tuxpaint.org
Mac OSX, Windows, Linux
A kind of open source version of KidPix.  TuxPaint is a drawing program for children, and as such has big easy to use controls, lots of color, and lots of sound effects.  The developer's site has some great videos of the software in action. While your there remember to download the additional rubber stamps for the program.

PHPList


www.phplist.com
Web-Based
An open source news letter manager which is easily integrated into an existing school/district website. It features RSS aggregation, scheduling, mailing-list opt in, tracking, and a bunch of other useful functions.

Audacity


audacity.sourceforge.net
Mac OSX, Windows, Linux
A very nice interface for editing sound files, or recording voice.  It is a great choice for teachers interested in doing a podcasting project.

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