Moodle is a course management system (CMS) - a free Open Source software package designed to help educators create effective online courses based on sound pedagogical principles. You can download and use it on any computer you have handy (including webhosts), yet it can scale from a single-teacher site to a 200,000-student University. Moodle has a large and diverse user community with over 50,000 installations worldwide speaking 75 languages in 200 countries.

IBM manufactures and sells computer services, hardware, and software. Also provides financing services in support of its computer business.

Scribd is a social publishing site, where tens of millions of people share original writings and documents. Scribd's vision is to liberate the written word.