What are some alternatives?
When comparing WPMU DEV and Kraken, you can also consider the following products
Pareto Security - Pareto Security is a Wordpress Security plugin
Coinbase - Bitcoin, safe and easy.
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).
Bitfinex - Bitfinex is the largest and most advanced crypto-currencies trading platform.
Yoast Plugins - Yoast offers plugins to improve SEO and optimize web sites and blogs.
Binance - Cryptocurrencies exchange platform