Create, edit, print , save, publish and share online tests for e-learnig

Simtel.net: "daypo - Online Quizzes 1.0
The Daypo program is designed for create, edit, print , save, publish and share online tests for e-learnig. You can create your own tests to learn yourself, for repeating until you memorice then, and the best, it's totally free."

Accounting and Wholesale Distribution Software

BS1 Enterprise Accounting - Free Edition 2007.2
Accounting and Wholesale Distribution Software: General Ledger, Accounts Payable, Accounts Receivable, Inventory, Purchase Orders, Sales Orders and Quotes, and Sales Analysis.

Great email client

Thunderbird 2.0 is a great email client from the same people who brought you the Firefox browser.

Cross-platform tool that monitors Web sites for updates. GPL

WebMonX 0.2.0 is a cross-platform tool that monitors Web sites for updates and changes. It saves you time and always keeps you up-to-date by periodically checking these pages at set intervals.

Google Earth combines satellite imagery, maps and the power of Google Search

Google Earth 4.0.2746
Want to know more about a specific location? Dive right in -- Google Earth combines satellite imagery, maps and the power of Google Search to put the world's geographic information at your fingertips.

Zoom from satellite altitude into any place on Earth

NASA World Wind
An open source project, that lets you zoom from satellite altitude into any place on Earth

Generic whois client (and server). GPL

gwhois 20070403 is a generic whois client (and server) which strives to know the right server to query for each and every top level domain and IP address. You can ask gwhois about a domain or IP address, and it will automatically forward your query to the appropriate server. It even queries whois servers that can only be reached by a Web form, and outputs the results as text. It can be used as a client or as a relaying server, so you can use your normal whois client to ask gwhois.

GeoServer connects your information to the Geospatial Web. GPL

With GeoServer 1.5.0-RC4 , you can publish and edit data using open standards. Your information is made available in a large variety of formats as maps/images or actual geospatial data. GeoServer's transactional capabilities offer robust support for shared editing. It supports WFS-T and WMS open protocols from the OGC to produce JPEG, PNG, SVG, KML/KMZ, GML, PDF, Shapefiles, and more. It is built on the GeoTools2 Java GIS toolkit.

Toolkit for developing network GUI applications. GPL

GLobal Application Network 0.4.3 is a toolkit for developing network GUI applications. It consists of an Universal Client Application and a Qt-based Application Server development platform for creating GUI oriented client-server applications. It allows the developer to just write code using the Qt programming style for the server side and forget about the client side.