Heroku (pronounced her-OH-koo) is a cloud application platform – a new way of building and deploying web apps. Heroku's service lets app developers spend 100% of their time on their application code, not managing servers, deployment, ongoing operations, or scaling. Though Heroku was acquired by Salesforce in 2011, it continues to operate independently from their SOMA office in San Francisco.
DigitalOcean, the fastest growing cloud infrastructure provider for developers, is now the second largest hosting provider in the world. The ranking comes from the latest report published by Netcraft, a respected authority on the market share of web servers, operating systems, and hosting providers.
Ubuntu is a community developed operating system that is perfect for laptops, desktops and servers. Ubuntu is and always will be free of charge. You do not pay any licensing fees. You can download, use and share Ubuntu with your friends, family, school or business for absolutely nothing.