I have decided 6 types of wordpress plugins categories to easiest find according to your requirement.
Affiliate links Plugins
A WordPress Platform to manage affiliates links with using affiliate link manager plugins. In this plugins to natural affiliate links manage & automatically generate links.
WordPress Forms Builder Plugins
A build forms with just drag & drop into a few minutes. The easy to pick a field is Name, Email, Mobile Number, Address, Sumit button etc.
WordPress Post & Page Build Plugins
If you have writing blog content, create a landing page, portfolio page, contact us and page/post manage to your choice with helping of Plugins.
WordPress Security & Safe Plugins
WordPress itself is secure CMS system, but security Plugins its help to add-on extra + full security with backup create of your site. To protect hackers and Spammers help to more than secure & Safe.
WordPress SEO Plugins
In this Plugins to track your traffic, keyword, sitemap, crawler and boost up your website on search engine. The SEO Plugins to manage title, Description, Meta keywords, tags, categories, archive, sitemap etc.
WordPress Social Media Plugins
The Social media network plugins to manage online sharing website links, Follower etc. You can place the social sharing buttons after and before the post & page of content.