Companies such as Rackspace, Heroku, and Amazon use freemium business patterns by providing cloud services for free, but in limited and trial use.
ChinesePod was previously based on a 'freemium' business model similar to English as a Second Language Podcast; in 2011 it became necessary to purchase a package in order to access the lesson material.
Several implementations of SpicyNodes have been developed by IDEA, including a web-based version built on Adobe Flash which is available as a Software as a service web site with both free and paid versions; and as multitouch version for the iPad released in Spring 2011 as part of the "WikiNodes" app.