Liferay explore digital experience platform that create dynamic websites,Business-centric apps and many more.Alfresco is an open source content management system to handle critical document management and collaberation. Alfray having liferay that providing many services such as liferay consulting,customization,development,migration,implementation,performance tuning,integration.Liferay also provides training that gains your knowledge by Fundamental training,development training,content management,platform development,front end development.As far as alfresco is concerned it helps out by consulting,development,customization and custom alfresco integration.