Many websites use plug$-$ins to enhance interactivity and functionality. Plug$-$ins can be used to manage contact forms, provide enhanced analytics tools, improve SEO, send communications to subscribers, and more. Web development tools often include plug$-$ins to purchase; some are offered at no cost$.$ Other plug$-$ins are available from third$-$party vendors or from the developers themselves. As with any technology, it is important to evaluate the source of a plug$-$in before installing or downloading it$.$

Do This: Make a list of popular types of plug$-$ins. Choose one CMS$,$ such as WordPress. What types of plug$-$ins do they offer? How do they ensure the plug$-$ins are secure$?$ What plug$-$ins might you use on a website you create for a club or organization with which you are involved or in which you are interested? Are these available in WordPress? If so$,$ are they free or for a fee? Do alternatives exist outside of WordPress? If so$,$ how reliable are these?