What are some alternatives?
When comparing WP Smush and Yoast Plugins, you can also consider the following products
TinyPNG - Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!
Gravity Forms - Gravity Forms is one of the best and easiest contact form plugins to create modern forms for websites powered by widely-used WordPress.
ImageOptim - Faster web pages and apps.
Wordfence - Comprehensive security plugin for WordPress.
WP Rocket - WP Rocket offers a caching plugin for Wordpress.
Pareto Security - Pareto Security is a Wordpress Security plugin