What are some alternatives?
When comparing Rackspace and Namecheap, you can also consider the following products
AWS - Amazon Web Services offers reliable, scalable, and inexpensive cloud computing services. Free to join, pay only for what you use.
GoDaddy - GoDaddy makes registering Domain Names fast, simple, and affordable. Find out why so many business owners chose GoDaddy to be their Domain Name Registrar.
DigitalOcean - Simplifying cloud hosting. Deploy an SSD cloud server in 55 seconds.
Google Domains - Google Domains is designed and built to make getting online easy and managing your domains simple.
000webhost - Zero cost website hosting with PHP, MySQL, Cpanel & no ads!
Gandi.net - GANDI is a domain name registrar and cloud hosting company. Free website, SSL certificate, blog, and e-mail included. VPS dedicated virtual servers, cloud hosting.