Blogger is a blog-publishing service that allows multi-user blogs with time-stamped entries.
Buy me a coffee is a service for online content creators that they may use to receive tips and donations to support their work.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Open Graph is a protocol that is used to integrate any web page into the social graph.
OpenGSE is a test suite used for testing servlet compliance. It is deployed by using WAR files that are deployed on the server engine.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.