What are some alternatives?
When comparing Vultr and Plesk, you can also consider the following products
DigitalOcean - Simplifying cloud hosting. Deploy an SSD cloud server in 55 seconds.
cPanel - With its first-class support and rich feature set, cPanel & WHM has been the web hosting industry's most reliable, intuitive control panel since 1997.
Linode - We make it simple to develop, deploy, and scale cloud infrastructure at the best price-to-performance ratio in the market.
Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
Microsoft Azure - Windows Azure and SQL Azure enable you to build, host and scale applications in Microsoft datacenters.
Dokku - Docker powered mini-Heroku in around 100 lines of Bash