THe Apache Software foundation, the organization behind open source projects like Apache Webserver, Apache Solr and lots of other open source projects has release Open-Meeting, an open source web conferencing system. It uses Red5 streaming server and boasts of features like
The grand Daddy of all the CMS out there. It is hugely popular and according to a recent report, WP powers almost 15% of websites all over the world. There are lots of plugins which you can use to White Label and rebrand worpdpress as your own. The cost is free and community is huge.
2. Light CMS:
A hugely popular CMS with over 1,75,000 users worldwide. It is a hosted CMS with and touts designers as its target users. The most notable aspect LIGHT CMS is that it does try to be everything to everyone. Its main aim is to enable users to create a beautiful website with minimal effort. When it comes to advanced options Light CMS has an online storefront which integrates with popular payment gateway platforms. The best part is that it allows you to add/edit products from right inside the page without need to any dashboard.