jQuery

Refers to the speed at which the elements on a web page load. Site speed relates to ease of use, and is also a metric used by search engine algorithms in determining site health.

Meta tags are HTML fields that exist for web pages and help to define its content for search engines. They are primarily used to help search engines structure your site’s content.

Software tools that are an end product in themselves, but help to facilitate other services or product creation. Examples include project management software and graphic design software.

Entire companies exist to provide software tools to individuals or businesses, as well as support for those products.