This is the list of the very best online listings of open source applications for Windows. Websites are described and links are provided. If you want to find open source software alternatives to well-known commercial software, this is a good place to begin your search.

1. Open Source Alternative

This website allows to find open source software alternatives to well-known commercial software. You may browse through software categories and compare pros and cons of both commercial products as well as open source software.

2. DownloadpediA: Open Source Windows

This is the updated list of the best open source software for Windows. The only way to have TRUE “Open Source Windows” is to have all equivalent native Windows programs uninstalled and removed.

3. OpenDisc – High Quality Open Source Software for Windows

OpenDisc is a high qualiy collection of open source software (OSS) for the Microsoft Windows operating system. The main goal of the project is to provide a free alternative to costly software, with equal or often better quality equivalents to proprietary, shareware or freeware software for Microsoft Windows. You can grab the .ISO image file of the disc, containing all of the recommended open source applications.

4. The OSSwin project: Open Source for Windows!
A large list of open source software for Windows, divided into nearly 50 categories.

5. List Of Open-source Programs (LOOP) for Microsoft Windows Operating Systems
A list of the best open-source applications that run on Windows. The purpose of this list is to demonstrate the quality of open-source applications and advocate the open source software development model.

6. TTCS OSSWIN CD
The TTCS OSSWIN CD is a collection of over 100 Free/Open Source software for home and business users using the Microsoft Windows 98SE/Me/2000 and XP operating systems.

7. OpenSourceList.org
Open Source Software for Windows, Linux, Mac OSX….

8. Open Source Windows
A simple list of the best free and open source software for Windows. We aren’t trying to be a comprehensive listing of every open-source Windows application, instead we want to showcase the best, most important, and easiest to use. This page should be a handy reference and a useful tool for getting more people to start using free and open-source software. Only the very best 55 open source applications are listed here.

9. Mohawke’s Best of the Best Free and Open Source Software Collection
A list of over 260 open source, shareware, and freeware applications for Windows.

10. Open Source God: 480+ Open Source Applications
Open source software is booming: here we round up over 480 open source applications for you to use or build upon.