43 Things is a social networking website established as an online goal setting community. It is built on the principles of tagging, rather than creating explicit interpersonal links (as seen in Friendster and Orkut). Users create accounts and then list a number of goals or hopes; these goals are parsed by a lexer and connected to other people's goals that are constructed with similar words or ideas. This concept is also known as folksonomy. Users can set up to 43 goals, and are encouraged to explore the lists of other users and "cheer" them on towards achieving their goals.
Ruby is a dynamic, open source programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write.
Commercial software, or less commonly, payware, is computer software that is produced for sale or that serves commercial purposes, a customer of the proprietary software pays a fee for a license to use the software.