Scalr is a workload management system that started as an open source project by MediaPlug, a media-sharing service, for sending workloads to Amazon Web Services. It's now an Apache 2 open source code project at Google Code, with an enterprise version offered as a hosted service by startup Scalr.net, founded by Sebastian Stadil. It can provision servers in EC2, scale out servers as traffic demands, perform disaster recovery and allow changes in server management. Although Scalr has been described as "a poor man's RightScale," its capabilities have gotten increasingly sophisticated. It can recover a stalled server, and scale and recover database servers as well as regular application workloads.