DataTables is a table enhancing plug-in for the jQuery Javascript library, adding sorting, paging and filtering abilities to plain HTML tables with minimal effort. If client prefer to use a package manager such as NPM or Bower, distribution repositories are available with software.
Drupal is an open source content management platform powering millions of websites and applications. Its built, used, and supported by an active and diverse community of people around the world.
Google Calendar is an get a button on its browser toolbar that they can easily click to see upcoming events from google calendar, without ever leaving their page. And if they are on sites that have special events encoded, it can click the button to instantly add events to they calendar.
Gmail is a free, advertising-supported email service offered as part of Google's G Suite, with 15GB of storage, color-coded inbox filters and unsend button.