The Mahalo Top 7
- Official Site: Open Source Initiative
- Wikipedia: Open Source | Open Source Software
- SourceForge.net: Largest Open Source Software Development Website
- Open Source Living: Open Source Software Archive
- Ars Technica: Open Source Decade: 10 Years After the Free Software Summit (April 7, 2008)
- Article: What Is Open Source (September 15, 2005)
- YouTube Video: CNET Insider Secrets - Open Source Free Software (Time 3:19)
Open Source Information and Articles
- Howstuffworks: What Does Open Source Mean?
- ComputerworldUK: Does Open Source Really Work for Business? (March 7, 2008)
- ComputerworldUK: First Impressions Count Most with Open Source (February 11, 2008)
- PC Magazine: Is Open-Source Really Safer? (May 4, 2004)
- IBM developerWorks: Open Source Tutorials and Projects
Get Open Source Software
- WHDb: 50 Frustrating Proprietary Programs and their Open Source Alternatives (February 7, 2008)
- Open Source Windows: Free, Open-Source Software for Windows XP and Vista
- Open Source Mac: Free, Open-Source Software for Os X
- ZDNet: Open Source Downloads
- Daily Writing Tips: 50 Open Source Resources for Writers
Operating System
- Official Site: The GNU Operating System
Audio and Video
- Audacity (Audio Editor): Official Site
- Avidemux (Video Editor): Official Site
- Blender (3D Creation): Official Site
- Kaltura (Video Platform): Official Site
Photo and Graphics
- GIMP (Image Manipulation): Official Site
- Inkscape (Vector Graphics): Official Site
Business
- OpenOffice (Office Suite): Official Site
- phplist (Newsletter Manager): Official Site
Communications
- Asterisk (PBX and Telephony Platform): Official Site
- tribox CE: (Asterisk-based PBX system) Official Site
- FreePBX: (PBX) Official Site
Open Source Blogs and Communities
- ZDNet: Open Source Blog
- Download Squad: Open Source Posts
- Ostatic: The Business Prospects for Open Source: What's Needed? (June 6, 2008)
- GigaOM: Can an OS Company be Part of the OS Community? (April 7, 2008)
- O'Reilly Radar: Open Source Licenses are Obsolete - O'Reilly Radar (August 1, 2006)
- LinuxForums: Open Source Forums
- Port 25: The Open Source Community at Microsoft
- Openeverything.net
Open Source News
- Google News: Open Source Search
- CNET News: Open Source News
- Wired: Open Source Software Made Developers Cool. Now It Can Make Them Rich (March 24, 2008)
- PC World: Microsoft Embraces Open Source (February 21, 2008)
- Forbes.com: Cash Me Out: The End of Open Source as Counterculture (February 25, 2008)
- Ars Technica: Gartner: 80% of Commercial Apps to Use Open Source by 2012 (February 5, 2008)
- PC Magazine: Open Source in Washington (June 20, 2007)
Open Source Merchandise
- Amazon.com: Open Source Books
- Powell's Books: Open Source Books
- CafePress: Open Source T-Shirts and Gifts