open source

OpenVPN is a full-featured open source SSL VPN solution.

A Free, Open Source Windows clock replacement with alarms, atomic clock and more

This is a free and open source calculator of chess rating for tournament players

Lobo is an open source web browser that is written completely in Java.

SugarCRM’s Open Source architecture easily adapts to any business environment.

nopCommerce is the open-source eCommerce solution.

SharpArchiver is an open source program released under the GNU LGP Llicense

DotShoppingCart is an open source eCommerce & CMS platform.

vTiger is an Open Source, web-based customer relationship management system.

Xpdf is an open source viewer for Portable Document Format (PDF) files.