What are some alternatives?
When comparing WPMU DEV and Imagify.co, you can also consider the following products
Pareto Security - Pareto Security is a Wordpress Security plugin
WP Smush - Reduce image file sizes, improve performance and boost your SEO using the free WPMU DEV WordPress...
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).
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.
Yoast Plugins - Yoast offers plugins to improve SEO and optimize web sites and blogs.
TinyPNG - Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!