What are some alternatives?
When comparing WPMU DEV and Pareto Security, you can also consider the following products
MAMP - MAMP is the abbreviation for Macintosh, Apache, MySQL, and PHP. It is a reliable application with its four components that allows you to access the local PHP server as well as the database server (SQL).
Yoast Plugins - Yoast offers plugins to improve SEO and optimize web sites and blogs.
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.
Jackmail - A newsletter plugin for Wordpress.
Wordfence - Comprehensive security plugin for WordPress.
Firefox Developer Edition - Built for those who build the Web. The only browser made for developers.