Open Source

CMS:

• Drupal
• Movable Type

Online Classroom

• Moodle

Online Meeting

• DimDim

Video

• Kaltura
• Article: “How to set up your own on-demand video site” – ibm.com
• How to convertencode files to FLV using FFMPEG & PHP
• FFMPEG – PHP
• FFMPEG on Ubuntu

Podcasting

• MTR Podcast Recorder WordPress Plugin

Social Networking

• elgg.org

Open Microblogging

• laconi.ca

Forums

• Redit.com

Project Management

• ProjectPier.org

Related Links:

• PHP Contribution to Open Source via blog.fedecarg.com