open source

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.

nopCommerce is the open-source eCommerce solution.

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

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

HaDES HardDisk Encryption System is an enterprise, open source encryption tool.

Dolibarr ERP/CRM, the easy to use open source software to manage your activity

Moon Secure Antivirus-A simple open source anti virus.

An extremely popular open-source .NET build tool

a lightweight open-source aggregator that supports RSS and ATOM formats