Amazon EC2

Try Amazon EC2 free for one year.

http://aws.amazon.com/free/

AWS Free Usage Tier (Per Month):
750 hours of Amazon EC2 Linux Micro Instance usage (613 MB of memory and 32-bit and 64-bit platform support) ֠enough hours to run continuously each month*
750 hours of an Elastic Load Balancer plus 15 GB data processing*
10 GB of Amazon Elastic Block Storage, plus 1 million I/Os, 1 GB of snapshot storage, 10,000 snapshot Get Requests and 1,000 snapshot Put Requests*
5 GB of Amazon S3 standard storage, 20,000 Get Requests, and 2,000 Put Requests*
30 GB per of internet data transfer (15 GB of data transfer ԩnԠand 15 GB of data transfer ԯutԠacross all services except Amazon CloudFront)*
25 Amazon SimpleDB Machine Hours and 1 GB of Storage**
100,000 Requests of Amazon Simple Queue Service**
100,000 Requests, 100,000 HTTP notifications and 1,000 email notifications for Amazon Simple Notification Service**
10 Amazon Cloudwatch alarms**
In addition to these services, the AWS Management Console is available at no charge to help you build and manage your application on AWS.

Amazon Elastic Compute Cloud (EC2) Documentation
http://aws.amazon.com/documentation/ec2/

Basic 64-bit Amazon Linux AMI