https://www.appfog.com/
PaaS offering for a wide range of platforms, free up to 8 servers, 2G of ram, 100M database. Supports, PHP, Node.js and more.
https://www.nodejitsu.com/
PaaS offering for Node.js. Based on units called "drones". Starts at $3/month for a single drone, free for open source projects.
https://phpfog.com/
PHP cloud hosting. Very slick architecture. Custom managed EC2 nodes deployed behind varnish caches and nginx load balancers. Fairly reasonably priced.
http://www.enki.co/
Managed cloud computing. A slicehost server for about $50 is roughly equivalent to $113 with enki. Not outrageous for a managed service, depending on how deep the management goes.
