We recommend these plugins in your worspress website. And don’t use more than 7 or 8 plugins.
Advanced Automatic Updates: Adds extra options to WordPress’ built-in Automatic Updates feature.
Akismet: Used by millions, Akismet is quite possibly the best way in the world to protect your blog from comment and trackback spam. It keeps your site protected from spam even while you sleep.
To get started:
1) Click the “Activate” link to the left of this description,
2) Sign up for an Akismet API key, and
3) Go to your Akismet configuration page, and save your API key.
Tips: you can get free API key when you use jetpack.
Jetpack by WordPress.com: Bring the power of the WordPress.com cloud to your self-hosted WordPress. Jetpack enables you to connect your blog to a WordPress.com account to use the powerful features normally only available to WordPress.com users.
Limit Login Attempts: Limit rate of login attempts, including by way of cookies, for each IP.
Sunny (Connecting CloudFlare and WordPress): Automatically clear CloudFlare cache. And, protect your WordPress site at DNS level.
WP Fastest Cache: The simplest and fastest WP Cache system
Google Publisher Plugin: Use Google AdSense and other Google tools with your WordPress site. This is a very nice tool and plugin. It is one of the best plugin