K12 Open Technologies

The CmapTools program empowers users to construct, navigate, share and criticize knowledge models represented as concept maps.

While this isn't technically open technology Google has assembled an impressive set of free tools for educators that encourage collaboration on the web.

PidginGaim is a multi-protocol instant messaging (IM) client for Linux, BSD, MacOS X, and Windows. It is compatible with AIM and ICQ (Oscar protocol), MSN Messenger, Yahoo!, IRC, Jabber, Gadu-Gadu, SILC, Novell GroupWise Messenger, Lotus and Zephyr

GIMP is the GNU Image Manipulation Program. It is open source software for photo retouching, image composition, and image authoring. It works on many operating systems and in many languages.

Inkscape is an Open Source vector graphics editor, with capabilities similar to Illustrator, Freehand, CorelDraw, or Xara X using the W3C standard Scalable Vector Graphics (SVG) file format.

The KDE Edutainment Project develops educational software for the graphical K Desktop Environment for Linux and Unix workstations. Its primary focus is on the specialized user interface needs of K-12 students and lesson planning tools.

Firefox is an open source browser that provides many innovative features such as tabbing and support of extensions â€" additional programs that work within the browser. In addition, it protects your computer from most viruses, spyware and pop-ups.

Nvu is a web page creation and editing application. It supports advanced features such as CSS and provides easy to use toolbars for common functions.

Macintosh OS X specific version of the OpenOffice suite of common productivity tools.

TheOpenDisc is a collection of high quality free and open source software. The programs run in Windows and cover the most common tasks such as word processing, presentations, e-mail, web browsing, web design, and image manipulation.

Num Sum brings you online, simple, sharable web spreadsheets. In other words, you can now create social spreadsheets. All you need to join in is a modern web browser.

OpenOffice.org is an open source multi-platform and multilingual office suite. It includes a word processor, spreadsheet, multimedia presentation tool, drawing program and database. It can run on Microsoft Windows, Macintosh OS, GNU/Linux, Solaris.

SchoolForge's mission is to unify independent organizations that advocate, use, and develop open resources for education. We advocate the use of open texts and lessons, open curricula, free software and open source in education.

PDFCreator easily creates PDFs from any Windows program. Use it like a printer in Word, StarCalc or any other Windows application.

Scribus is an open-source program that brings award-winning professional page layout to Linux/Unix, MacOS X, OS/2 and Windows desktops with a combination of "press-ready" output and new approaches to page layout.

Tux Paint is a free drawing program designed for young children (kids ages 3 and up). It has a simple, easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who helps guide children as they use the program.

A collection of open source applications built specifically on the Mac OS X foundation

The OpenSolaris project is an open source community and a place for collaboration and conversation around OpenSolaris technology.