awsAWS is providing 12 month free usage tier, according to AWS website, The Free Usage Tier can be used for anything you want to run in the cloud: launch new applications, test existing applications in the cloud, or simply gain hands-on experience with AWS.

Details on AWS Free Usage Tier (Per Month):

Elastic Compute Cloud (EC2)

  • 750 hours of Amazon EC2 Linux/UNIX or RHEL 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 Amazon EC2 Microsoft Windows Server 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*
  • 30 GB of Amazon Elastic Block Storage, plus 2 million I/Os and 1 GB of snapshot storage*

Simple Storage Service (S3)

  • 5 GB of Amazon S3 standard storage, 20,000 Get Requests, and 2,000 Put Requests*

DynamoDB

  • 100 MB of storage, 5 units of write capacity, and 10 units of read capacity for Amazon DynamoDB.**

Relational Database Service (RDS)

  • 750 hours of Amazon RDS Single-AZ Micro DB Instances, for running MySQL, Oracle BYOL or SQL Server (running SQL Server Express Edition) – enough hours to run a DB Instance continuously each month*
  • 20 GB of database storage
  • 10 million I/Os
  • 20 GB of backup storage for your automated database backups and any user-initiated DB Snapshots

Simple Workflow (SWF)

  • 1,000 Amazon SWF workflow executions can be initiated for free. A total of 10,000 activity tasks, signals, timers and markers, and 30,000 workflow-days can also be used for free**

Simple Queue Service (SQS) and Simple Notification Service (SNS)

Amazon Elastic Transcoder

  • 20 minutes of SD transcoding or 10 minutes of HD transcoding**

CloudWatch

Data Transfer

  • 15 GB of bandwidth out aggregated across all AWS services*

Data Pipeline

  • 3 low frequency preconditions running on AWS per month*
  • 5 low frequency activities running on AWS per month*

ElastiCache

  • 750 hours of Amazon ElastiCache – enough hours to run a Cache Node continuously each month.*

For more on terms and conditions check  here